From b2bec204e214e6b077c4c1901d07fabec27104e9 Mon Sep 17 00:00:00 2001
From: Torsten Grote <t@grobox.de>
Date: Wed, 1 Apr 2020 15:04:52 -0300
Subject: [pos] automatic code cleanup

---
 merchant-terminal/src/main/AndroidManifest.xml     |  41 ++--
 .../taler/merchantpos/config/MerchantRequest.kt    |   8 +-
 .../java/net/taler/merchantpos/order/LiveOrder.kt  |   3 +-
 .../src/main/res/drawable/ic_cash_refund.xml       |  12 +-
 .../src/main/res/drawable/ic_check_circle.xml      |  14 +-
 .../main/res/drawable/ic_history_black_24dp.xml    |  10 +-
 .../main/res/drawable/ic_launcher_background.xml   | 236 +++++++++++++++------
 .../src/main/res/drawable/ic_menu_manage.xml       |  12 +-
 .../src/main/res/drawable/ic_move_money_24dp.xml   |  10 +-
 .../src/main/res/drawable/side_nav_bar.xml         |  12 +-
 .../src/main/res/layout/activity_main.xml          |  40 ++--
 .../src/main/res/layout/app_bar_main.xml           |  53 +++--
 .../src/main/res/layout/fragment_categories.xml    |  47 ++--
 .../main/res/layout/fragment_config_fetcher.xml    |  45 ++--
 .../main/res/layout/fragment_merchant_config.xml   | 203 +++++++++---------
 .../main/res/layout/fragment_merchant_history.xml  |  17 +-
 .../src/main/res/layout/fragment_order.xml         | 195 +++++++++--------
 .../src/main/res/layout/fragment_order_state.xml   |  59 +++---
 .../main/res/layout/fragment_payment_success.xml   |  99 +++++----
 .../src/main/res/layout/fragment_products.xml      |  43 ++--
 .../src/main/res/layout/fragment_refund.xml        | 166 +++++++--------
 .../src/main/res/layout/list_item_category.xml     |  25 ++-
 .../src/main/res/layout/list_item_history.xml      | 134 ++++++------
 .../src/main/res/layout/list_item_order.xml        |  73 ++++---
 .../src/main/res/layout/list_item_product.xml      |  59 +++---
 .../src/main/res/layout/nav_header_main.xml        |  61 +++---
 .../src/main/res/menu/activity_main_drawer.xml     |  25 ++-
 .../main/res/mipmap-anydpi-v26/ic_taler_logo.xml   |   4 +-
 .../res/mipmap-anydpi-v26/ic_taler_logo_round.xml  |   4 +-
 29 files changed, 898 insertions(+), 812 deletions(-)

(limited to 'merchant-terminal/src')

diff --git a/merchant-terminal/src/main/AndroidManifest.xml b/merchant-terminal/src/main/AndroidManifest.xml
index f52995f..3d89fee 100644
--- a/merchant-terminal/src/main/AndroidManifest.xml
+++ b/merchant-terminal/src/main/AndroidManifest.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
+<?xml version="1.0" encoding="utf-8"?><!--
   ~ This file is part of GNU Taler
   ~ (C) 2020 Taler Systems S.A.
   ~
@@ -16,35 +15,35 @@
   -->
 
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-        xmlns:tools="http://schemas.android.com/tools"
-        package="net.taler.merchantpos">
+    xmlns:tools="http://schemas.android.com/tools"
+    package="net.taler.merchantpos">
 
     <uses-permission android:name="android.permission.NFC" />
     <uses-permission android:name="android.permission.INTERNET" />
 
     <uses-feature
-            android:name="android.hardware.nfc"
-            android:required="false" />
+        android:name="android.hardware.nfc"
+        android:required="false" />
 
     <uses-feature
-            android:name="android.hardware.telephony"
-            android:required="false" />
+        android:name="android.hardware.telephony"
+        android:required="false" />
 
     <application
-            android:allowBackup="true"
-            android:fullBackupContent="@xml/backup_descriptor"
-            android:icon="@mipmap/ic_taler_logo"
-            android:label="@string/app_name"
-            android:roundIcon="@mipmap/ic_taler_logo_round"
-            android:supportsRtl="true"
-            android:theme="@style/AppTheme"
-            tools:ignore="GoogleAppIndexingWarning">
+        android:allowBackup="true"
+        android:fullBackupContent="@xml/backup_descriptor"
+        android:icon="@mipmap/ic_taler_logo"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_taler_logo_round"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme"
+        tools:ignore="GoogleAppIndexingWarning">
         <activity
-                android:name=".MainActivity"
-                android:label="@string/app_name"
-                android:screenOrientation="landscape"
-                android:theme="@style/AppTheme.NoActionBar"
-                tools:ignore="LockedOrientationActivity">
+            android:name=".MainActivity"
+            android:label="@string/app_name"
+            android:screenOrientation="landscape"
+            android:theme="@style/AppTheme.NoActionBar"
+            tools:ignore="LockedOrientationActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
diff --git a/merchant-terminal/src/main/java/net/taler/merchantpos/config/MerchantRequest.kt b/merchant-terminal/src/main/java/net/taler/merchantpos/config/MerchantRequest.kt
index 862dd33..6c9c741 100644
--- a/merchant-terminal/src/main/java/net/taler/merchantpos/config/MerchantRequest.kt
+++ b/merchant-terminal/src/main/java/net/taler/merchantpos/config/MerchantRequest.kt
@@ -32,7 +32,13 @@ class MerchantRequest(
     listener: Response.Listener<JSONObject>,
     errorListener: LogErrorListener
 ) :
-    JsonObjectRequest(method, merchantConfig.urlFor(endpoint, params), jsonRequest, listener, errorListener) {
+    JsonObjectRequest(
+        method,
+        merchantConfig.urlFor(endpoint, params),
+        jsonRequest,
+        listener,
+        errorListener
+    ) {
 
     override fun getHeaders(): MutableMap<String, String> {
         val headerMap = ArrayMap<String, String>()
diff --git a/merchant-terminal/src/main/java/net/taler/merchantpos/order/LiveOrder.kt b/merchant-terminal/src/main/java/net/taler/merchantpos/order/LiveOrder.kt
index f8d465b..a77e39b 100644
--- a/merchant-terminal/src/main/java/net/taler/merchantpos/order/LiveOrder.kt
+++ b/merchant-terminal/src/main/java/net/taler/merchantpos/order/LiveOrder.kt
@@ -50,7 +50,8 @@ internal class MutableLiveOrder(
 ) : LiveOrder {
     private val availableCategories: Map<Int, Category>
         get() = productsByCategory.keys.map { it.id to it }.toMap()
-    override val order: MutableLiveData<Order> = MutableLiveData(Order(id, currency, availableCategories))
+    override val order: MutableLiveData<Order> =
+        MutableLiveData(Order(id, currency, availableCategories))
     override val orderTotal: LiveData<Amount> = Transformations.map(order) { it.total }
     override val restartState = MutableLiveData(DISABLED)
     private val selectedOrderLine = MutableLiveData<ConfigProduct>()
diff --git a/merchant-terminal/src/main/res/drawable/ic_cash_refund.xml b/merchant-terminal/src/main/res/drawable/ic_cash_refund.xml
index 7359ca3..a053644 100644
--- a/merchant-terminal/src/main/res/drawable/ic_cash_refund.xml
+++ b/merchant-terminal/src/main/res/drawable/ic_cash_refund.xml
@@ -1,9 +1,9 @@
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportWidth="24"
-        android:viewportHeight="24">
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
     <path
-            android:fillColor="#000000"
-            android:pathData="M3,11H21V23H3V11M12,15A2,2 0 0,1 14,17A2,2 0 0,1 12,19A2,2 0 0,1 10,17A2,2 0 0,1 12,15M7,13A2,2 0 0,1 5,15V19A2,2 0 0,1 7,21H17A2,2 0 0,1 19,19V15A2,2 0 0,1 17,13H7M17,5V10H15.5V6.5H9.88L12.3,8.93L11.24,10L7,5.75L11.24,1.5L12.3,2.57L9.88,5H17Z" />
+        android:fillColor="#000000"
+        android:pathData="M3,11H21V23H3V11M12,15A2,2 0 0,1 14,17A2,2 0 0,1 12,19A2,2 0 0,1 10,17A2,2 0 0,1 12,15M7,13A2,2 0 0,1 5,15V19A2,2 0 0,1 7,21H17A2,2 0 0,1 19,19V15A2,2 0 0,1 17,13H7M17,5V10H15.5V6.5H9.88L12.3,8.93L11.24,10L7,5.75L11.24,1.5L12.3,2.57L9.88,5H17Z" />
 </vector>
diff --git a/merchant-terminal/src/main/res/drawable/ic_check_circle.xml b/merchant-terminal/src/main/res/drawable/ic_check_circle.xml
index 61e1b5a..08e5b50 100644
--- a/merchant-terminal/src/main/res/drawable/ic_check_circle.xml
+++ b/merchant-terminal/src/main/res/drawable/ic_check_circle.xml
@@ -1,10 +1,10 @@
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:alpha="0.56"
-        android:viewportWidth="24.0"
-        android:viewportHeight="24.0">
+    android:width="24dp"
+    android:height="24dp"
+    android:alpha="0.56"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
     <path
-            android:fillColor="@color/green"
-            android:pathData="M12,2C6.48,2 2,6.48 2,12s4.48,10 10,10 10,-4.48 10,-10S17.52,2 12,2zM10,17l-5,-5 1.41,-1.41L10,14.17l7.59,-7.59L19,8l-9,9z" />
+        android:fillColor="@color/green"
+        android:pathData="M12,2C6.48,2 2,6.48 2,12s4.48,10 10,10 10,-4.48 10,-10S17.52,2 12,2zM10,17l-5,-5 1.41,-1.41L10,14.17l7.59,-7.59L19,8l-9,9z" />
 </vector>
diff --git a/merchant-terminal/src/main/res/drawable/ic_history_black_24dp.xml b/merchant-terminal/src/main/res/drawable/ic_history_black_24dp.xml
index a61de1b..d9f75ea 100644
--- a/merchant-terminal/src/main/res/drawable/ic_history_black_24dp.xml
+++ b/merchant-terminal/src/main/res/drawable/ic_history_black_24dp.xml
@@ -1,9 +1,9 @@
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportWidth="24.0"
-        android:viewportHeight="24.0">
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
     <path
         android:fillColor="#FF000000"
-        android:pathData="M13,3c-4.97,0 -9,4.03 -9,9L1,12l3.89,3.89 0.07,0.14L9,12L6,12c0,-3.87 3.13,-7 7,-7s7,3.13 7,7 -3.13,7 -7,7c-1.93,0 -3.68,-0.79 -4.94,-2.06l-1.42,1.42C8.27,19.99 10.51,21 13,21c4.97,0 9,-4.03 9,-9s-4.03,-9 -9,-9zM12,8v5l4.28,2.54 0.72,-1.21 -3.5,-2.08L13.5,8L12,8z"/>
+        android:pathData="M13,3c-4.97,0 -9,4.03 -9,9L1,12l3.89,3.89 0.07,0.14L9,12L6,12c0,-3.87 3.13,-7 7,-7s7,3.13 7,7 -3.13,7 -7,7c-1.93,0 -3.68,-0.79 -4.94,-2.06l-1.42,1.42C8.27,19.99 10.51,21 13,21c4.97,0 9,-4.03 9,-9s-4.03,-9 -9,-9zM12,8v5l4.28,2.54 0.72,-1.21 -3.5,-2.08L13.5,8L12,8z" />
 </vector>
diff --git a/merchant-terminal/src/main/res/drawable/ic_launcher_background.xml b/merchant-terminal/src/main/res/drawable/ic_launcher_background.xml
index 2408e30..0d025f9 100644
--- a/merchant-terminal/src/main/res/drawable/ic_launcher_background.xml
+++ b/merchant-terminal/src/main/res/drawable/ic_launcher_background.xml
@@ -1,74 +1,170 @@
 <?xml version="1.0" encoding="utf-8"?>
-<vector
-    android:height="108dp"
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
     android:width="108dp"
-    android:viewportHeight="108"
+    android:height="108dp"
     android:viewportWidth="108"
-    xmlns:android="http://schemas.android.com/apk/res/android">
-    <path android:fillColor="#008577"
-          android:pathData="M0,0h108v108h-108z"/>
-    <path android:fillColor="#00000000" android:pathData="M9,0L9,108"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M19,0L19,108"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M29,0L29,108"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M39,0L39,108"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M49,0L49,108"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M59,0L59,108"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M69,0L69,108"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M79,0L79,108"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M89,0L89,108"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M99,0L99,108"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M0,9L108,9"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M0,19L108,19"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M0,29L108,29"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M0,39L108,39"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M0,49L108,49"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M0,59L108,59"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M0,69L108,69"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M0,79L108,79"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M0,89L108,89"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M0,99L108,99"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M19,29L89,29"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M19,39L89,39"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M19,49L89,49"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M19,59L89,59"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M19,69L89,69"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M19,79L89,79"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M29,19L29,89"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M39,19L39,89"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M49,19L49,89"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M59,19L59,89"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M69,19L69,89"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
-    <path android:fillColor="#00000000" android:pathData="M79,19L79,89"
-          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#008577"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
 </vector>
diff --git a/merchant-terminal/src/main/res/drawable/ic_menu_manage.xml b/merchant-terminal/src/main/res/drawable/ic_menu_manage.xml
index a0e423c..aeb047d 100644
--- a/merchant-terminal/src/main/res/drawable/ic_menu_manage.xml
+++ b/merchant-terminal/src/main/res/drawable/ic_menu_manage.xml
@@ -1,9 +1,9 @@
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportWidth="24.0"
-        android:viewportHeight="24.0">
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
     <path
-            android:fillColor="#FF000000"
-            android:pathData="M22.7,19l-9.1,-9.1c0.9,-2.3 0.4,-5 -1.5,-6.9 -2,-2 -5,-2.4 -7.4,-1.3L9,6 6,9 1.6,4.7C0.4,7.1 0.9,10.1 2.9,12.1c1.9,1.9 4.6,2.4 6.9,1.5l9.1,9.1c0.4,0.4 1,0.4 1.4,0l2.3,-2.3c0.5,-0.4 0.5,-1.1 0.1,-1.4z"/>
+        android:fillColor="#FF000000"
+        android:pathData="M22.7,19l-9.1,-9.1c0.9,-2.3 0.4,-5 -1.5,-6.9 -2,-2 -5,-2.4 -7.4,-1.3L9,6 6,9 1.6,4.7C0.4,7.1 0.9,10.1 2.9,12.1c1.9,1.9 4.6,2.4 6.9,1.5l9.1,9.1c0.4,0.4 1,0.4 1.4,0l2.3,-2.3c0.5,-0.4 0.5,-1.1 0.1,-1.4z" />
 </vector>
\ No newline at end of file
diff --git a/merchant-terminal/src/main/res/drawable/ic_move_money_24dp.xml b/merchant-terminal/src/main/res/drawable/ic_move_money_24dp.xml
index 349f48f..6702c56 100644
--- a/merchant-terminal/src/main/res/drawable/ic_move_money_24dp.xml
+++ b/merchant-terminal/src/main/res/drawable/ic_move_money_24dp.xml
@@ -1,9 +1,9 @@
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportWidth="24.0"
-        android:viewportHeight="24.0">
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
     <path
         android:fillColor="#FF000000"
-        android:pathData="M19,3L4.99,3c-1.11,0 -1.98,0.9 -1.98,2L3,19c0,1.1 0.88,2 1.99,2L19,21c1.1,0 2,-0.9 2,-2L21,5c0,-1.1 -0.9,-2 -2,-2zM19,15h-4c0,1.66 -1.35,3 -3,3s-3,-1.34 -3,-3L4.99,15L4.99,5L19,5v10zM16,10h-2L14,7h-4v3L8,10l4,4 4,-4z"/>
+        android:pathData="M19,3L4.99,3c-1.11,0 -1.98,0.9 -1.98,2L3,19c0,1.1 0.88,2 1.99,2L19,21c1.1,0 2,-0.9 2,-2L21,5c0,-1.1 -0.9,-2 -2,-2zM19,15h-4c0,1.66 -1.35,3 -3,3s-3,-1.34 -3,-3L4.99,15L4.99,5L19,5v10zM16,10h-2L14,7h-4v3L8,10l4,4 4,-4z" />
 </vector>
diff --git a/merchant-terminal/src/main/res/drawable/side_nav_bar.xml b/merchant-terminal/src/main/res/drawable/side_nav_bar.xml
index 50dc048..7b2e2b3 100644
--- a/merchant-terminal/src/main/res/drawable/side_nav_bar.xml
+++ b/merchant-terminal/src/main/res/drawable/side_nav_bar.xml
@@ -1,9 +1,9 @@
 <shape xmlns:android="http://schemas.android.com/apk/res/android"
-       android:shape="rectangle">
+    android:shape="rectangle">
     <gradient
-            android:angle="135"
-            android:centerColor="@color/colorPrimaryDark"
-            android:endColor="@color/colorPrimaryDark"
-            android:startColor="@color/colorPrimary"
-            android:type="linear"/>
+        android:angle="135"
+        android:centerColor="@color/colorPrimaryDark"
+        android:endColor="@color/colorPrimaryDark"
+        android:startColor="@color/colorPrimary"
+        android:type="linear" />
 </shape>
\ No newline at end of file
diff --git a/merchant-terminal/src/main/res/layout/activity_main.xml b/merchant-terminal/src/main/res/layout/activity_main.xml
index 6523caa..1285b19 100644
--- a/merchant-terminal/src/main/res/layout/activity_main.xml
+++ b/merchant-terminal/src/main/res/layout/activity_main.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
+<?xml version="1.0" encoding="utf-8"?><!--
   ~ This file is part of GNU Taler
   ~ (C) 2020 Taler Systems S.A.
   ~
@@ -15,28 +14,27 @@
   ~ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
   -->
 
-<androidx.drawerlayout.widget.DrawerLayout
-        xmlns:android="http://schemas.android.com/apk/res/android"
-        xmlns:app="http://schemas.android.com/apk/res-auto"
-        xmlns:tools="http://schemas.android.com/tools"
-        android:id="@+id/drawer_layout"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:fitsSystemWindows="true"
-        tools:openDrawer="start">
+<androidx.drawerlayout.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/drawer_layout"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:fitsSystemWindows="true"
+    tools:openDrawer="start">
 
     <include
-            layout="@layout/app_bar_main"
-            android:layout_width="match_parent"
-            android:layout_height="match_parent"/>
+        layout="@layout/app_bar_main"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
 
     <com.google.android.material.navigation.NavigationView
-            android:id="@+id/nav_view"
-            android:layout_width="wrap_content"
-            android:layout_height="match_parent"
-            android:layout_gravity="start"
-            android:fitsSystemWindows="true"
-            app:menu="@menu/activity_main_drawer"
-            app:headerLayout="@layout/nav_header_main" />
+        android:id="@+id/nav_view"
+        android:layout_width="wrap_content"
+        android:layout_height="match_parent"
+        android:layout_gravity="start"
+        android:fitsSystemWindows="true"
+        app:headerLayout="@layout/nav_header_main"
+        app:menu="@menu/activity_main_drawer" />
 
 </androidx.drawerlayout.widget.DrawerLayout>
diff --git a/merchant-terminal/src/main/res/layout/app_bar_main.xml b/merchant-terminal/src/main/res/layout/app_bar_main.xml
index 0254c71..f6d9912 100644
--- a/merchant-terminal/src/main/res/layout/app_bar_main.xml
+++ b/merchant-terminal/src/main/res/layout/app_bar_main.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
+<?xml version="1.0" encoding="utf-8"?><!--
   ~ This file is part of GNU Taler
   ~ (C) 2020 Taler Systems S.A.
   ~
@@ -16,38 +15,38 @@
   -->
 
 <androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
-        xmlns:app="http://schemas.android.com/apk/res-auto"
-        xmlns:tools="http://schemas.android.com/tools"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        tools:context=".MainActivity">
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity">
 
     <com.google.android.material.appbar.AppBarLayout
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:theme="@style/AppTheme.AppBarOverlay">
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:theme="@style/AppTheme.AppBarOverlay">
 
         <androidx.appcompat.widget.Toolbar
-                android:id="@+id/toolbar"
-                android:layout_width="match_parent"
-                android:layout_height="?attr/actionBarSize"
-                android:background="?attr/colorPrimary"
-                app:popupTheme="@style/AppTheme.PopupOverlay" />
+            android:id="@+id/toolbar"
+            android:layout_width="match_parent"
+            android:layout_height="?attr/actionBarSize"
+            android:background="?attr/colorPrimary"
+            app:popupTheme="@style/AppTheme.PopupOverlay" />
 
     </com.google.android.material.appbar.AppBarLayout>
 
     <androidx.fragment.app.FragmentContainerView
-            android:id="@+id/navHostFragment"
-            android:name="androidx.navigation.fragment.NavHostFragment"
-            android:layout_width="match_parent"
-            android:layout_height="match_parent"
-            app:defaultNavHost="true"
-            app:layout_insetEdge="top"
-            app:layout_behavior="@string/appbar_scrolling_view_behavior"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintLeft_toLeftOf="parent"
-            app:layout_constraintRight_toRightOf="parent"
-            app:layout_constraintTop_toTopOf="parent"
-            app:navGraph="@navigation/nav_graph" />
+        android:id="@+id/navHostFragment"
+        android:name="androidx.navigation.fragment.NavHostFragment"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:defaultNavHost="true"
+        app:layout_behavior="@string/appbar_scrolling_view_behavior"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_insetEdge="top"
+        app:navGraph="@navigation/nav_graph" />
 
 </androidx.coordinatorlayout.widget.CoordinatorLayout>
diff --git a/merchant-terminal/src/main/res/layout/fragment_categories.xml b/merchant-terminal/src/main/res/layout/fragment_categories.xml
index a90585f..f81bf9a 100644
--- a/merchant-terminal/src/main/res/layout/fragment_categories.xml
+++ b/merchant-terminal/src/main/res/layout/fragment_categories.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
+<?xml version="1.0" encoding="utf-8"?><!--
   ~ This file is part of GNU Taler
   ~ (C) 2020 Taler Systems S.A.
   ~
@@ -16,31 +15,31 @@
   -->
 
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-        xmlns:app="http://schemas.android.com/apk/res-auto"
-        android:layout_width="match_parent"
-        xmlns:tools="http://schemas.android.com/tools"
-        android:layout_marginStart="8dp"
-        android:layout_marginEnd="8dp"
-        android:layout_height="match_parent">
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:layout_marginStart="8dp"
+    android:layout_marginEnd="8dp">
 
     <androidx.recyclerview.widget.RecyclerView
-            android:id="@+id/categoriesList"
-            android:layout_width="0dp"
-            tools:listitem="@layout/list_item_category"
-            android:layout_height="0dp"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toTopOf="parent" />
+        android:id="@+id/categoriesList"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:listitem="@layout/list_item_category" />
 
     <ProgressBar
-            android:id="@+id/progressBar"
-            style="?android:attr/progressBarStyleLarge"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toTopOf="parent" />
+        android:id="@+id/progressBar"
+        style="?android:attr/progressBarStyleLarge"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/merchant-terminal/src/main/res/layout/fragment_config_fetcher.xml b/merchant-terminal/src/main/res/layout/fragment_config_fetcher.xml
index af7dcaf..55403bd 100644
--- a/merchant-terminal/src/main/res/layout/fragment_config_fetcher.xml
+++ b/merchant-terminal/src/main/res/layout/fragment_config_fetcher.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
+<?xml version="1.0" encoding="utf-8"?><!--
   ~ This file is part of GNU Taler
   ~ (C) 2020 Taler Systems S.A.
   ~
@@ -16,30 +15,30 @@
   -->
 
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-        xmlns:app="http://schemas.android.com/apk/res-auto"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:layout_margin="16dp">
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:layout_margin="16dp">
 
     <TextView
-            android:id="@+id/titleView"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_margin="16dp"
-            android:text="@string/config_fetching"
-            android:textAppearance="@style/TextAppearance.AppCompat.Headline"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toTopOf="parent" />
+        android:id="@+id/titleView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_margin="16dp"
+        android:text="@string/config_fetching"
+        android:textAppearance="@style/TextAppearance.AppCompat.Headline"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
 
     <ProgressBar
-            android:id="@+id/progressBar"
-            style="?android:attr/progressBarStyleLarge"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_margin="16dp"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@+id/titleView" />
+        android:id="@+id/progressBar"
+        style="?android:attr/progressBarStyleLarge"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_margin="16dp"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/titleView" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/merchant-terminal/src/main/res/layout/fragment_merchant_config.xml b/merchant-terminal/src/main/res/layout/fragment_merchant_config.xml
index 2541887..b19f14c 100644
--- a/merchant-terminal/src/main/res/layout/fragment_merchant_config.xml
+++ b/merchant-terminal/src/main/res/layout/fragment_merchant_config.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
+<?xml version="1.0" encoding="utf-8"?><!--
   ~ This file is part of GNU Taler
   ~ (C) 2020 Taler Systems S.A.
   ~
@@ -16,136 +15,136 @@
   -->
 
 <ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
-        xmlns:app="http://schemas.android.com/apk/res-auto"
-        xmlns:tools="http://schemas.android.com/tools"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:fillViewport="true">
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:fillViewport="true">
 
     <androidx.constraintlayout.widget.ConstraintLayout
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            tools:context=".config.MerchantConfigFragment">
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        tools:context=".config.MerchantConfigFragment">
 
         <com.google.android.material.textfield.TextInputLayout
-                android:id="@+id/configUrlView"
-                android:layout_width="0dp"
-                android:layout_height="wrap_content"
-                android:layout_margin="16dp"
-                android:hint="@string/config_url"
-                app:boxBackgroundColor="@android:color/transparent"
-                app:boxBackgroundMode="outline"
-                app:layout_constraintEnd_toEndOf="parent"
-                app:layout_constraintStart_toStartOf="parent"
-                app:layout_constraintTop_toTopOf="parent">
+            android:id="@+id/configUrlView"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_margin="16dp"
+            android:hint="@string/config_url"
+            app:boxBackgroundColor="@android:color/transparent"
+            app:boxBackgroundMode="outline"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent">
 
             <com.google.android.material.textfield.TextInputEditText
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:inputType="textUri" />
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:inputType="textUri" />
 
         </com.google.android.material.textfield.TextInputLayout>
 
         <com.google.android.material.textfield.TextInputLayout
-                android:id="@+id/usernameView"
-                android:layout_width="0dp"
-                android:layout_height="wrap_content"
-                android:layout_margin="16dp"
-                android:hint="@string/config_username"
-                app:boxBackgroundColor="@android:color/transparent"
-                app:boxBackgroundMode="outline"
-                app:layout_constraintEnd_toEndOf="parent"
-                app:layout_constraintStart_toStartOf="parent"
-                app:layout_constraintTop_toBottomOf="@+id/configUrlView">
+            android:id="@+id/usernameView"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_margin="16dp"
+            android:hint="@string/config_username"
+            app:boxBackgroundColor="@android:color/transparent"
+            app:boxBackgroundMode="outline"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/configUrlView">
 
             <com.google.android.material.textfield.TextInputEditText
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:inputType="text" />
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:inputType="text" />
 
         </com.google.android.material.textfield.TextInputLayout>
 
         <com.google.android.material.textfield.TextInputLayout
-                android:id="@+id/passwordView"
-                android:layout_width="0dp"
-                android:layout_height="wrap_content"
-                android:layout_margin="16dp"
-                android:hint="@string/config_password"
-                app:boxBackgroundColor="@android:color/transparent"
-                app:boxBackgroundMode="outline"
-                app:endIconMode="password_toggle"
-                app:layout_constraintEnd_toStartOf="@+id/forgetPasswordButton"
-                app:layout_constraintStart_toStartOf="parent"
-                app:layout_constraintTop_toBottomOf="@+id/usernameView">
+            android:id="@+id/passwordView"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_margin="16dp"
+            android:hint="@string/config_password"
+            app:boxBackgroundColor="@android:color/transparent"
+            app:boxBackgroundMode="outline"
+            app:endIconMode="password_toggle"
+            app:layout_constraintEnd_toStartOf="@+id/forgetPasswordButton"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/usernameView">
 
             <com.google.android.material.textfield.TextInputEditText
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:inputType="textWebPassword" />
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:inputType="textWebPassword" />
 
         </com.google.android.material.textfield.TextInputLayout>
 
         <Button
-                android:id="@+id/forgetPasswordButton"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:layout_margin="16dp"
-                android:text="@string/config_forget_password"
-                android:visibility="gone"
-                app:layout_constraintBottom_toBottomOf="@+id/passwordView"
-                app:layout_constraintEnd_toEndOf="parent"
-                app:layout_constraintTop_toTopOf="@+id/passwordView"
-                tools:visibility="visible" />
+            android:id="@+id/forgetPasswordButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_margin="16dp"
+            android:text="@string/config_forget_password"
+            android:visibility="gone"
+            app:layout_constraintBottom_toBottomOf="@+id/passwordView"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintTop_toTopOf="@+id/passwordView"
+            tools:visibility="visible" />
 
         <CheckBox
-                android:id="@+id/savePasswordCheckBox"
-                android:layout_width="0dp"
-                android:layout_height="wrap_content"
-                android:layout_marginStart="16dp"
-                android:layout_marginTop="16dp"
-                android:layout_marginBottom="16dp"
-                android:checked="true"
-                android:text="@string/config_save_password"
-                app:layout_constraintBottom_toBottomOf="parent"
-                app:layout_constraintEnd_toStartOf="@+id/okButton"
-                app:layout_constraintHorizontal_chainStyle="spread_inside"
-                app:layout_constraintStart_toStartOf="parent"
-                app:layout_constraintTop_toBottomOf="@+id/passwordView"
-                app:layout_constraintVertical_bias="0.0" />
+            android:id="@+id/savePasswordCheckBox"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="16dp"
+            android:layout_marginTop="16dp"
+            android:layout_marginBottom="16dp"
+            android:checked="true"
+            android:text="@string/config_save_password"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toStartOf="@+id/okButton"
+            app:layout_constraintHorizontal_chainStyle="spread_inside"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/passwordView"
+            app:layout_constraintVertical_bias="0.0" />
 
         <com.google.android.material.button.MaterialButton
-                android:id="@+id/okButton"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:layout_margin="16dp"
-                android:text="@string/config_ok"
-                app:layout_constraintBottom_toBottomOf="parent"
-                app:layout_constraintEnd_toEndOf="parent"
-                app:layout_constraintStart_toEndOf="@+id/savePasswordCheckBox"
-                app:layout_constraintTop_toBottomOf="@+id/passwordView"
-                app:layout_constraintVertical_bias="0.0" />
+            android:id="@+id/okButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_margin="16dp"
+            android:text="@string/config_ok"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toEndOf="@+id/savePasswordCheckBox"
+            app:layout_constraintTop_toBottomOf="@+id/passwordView"
+            app:layout_constraintVertical_bias="0.0" />
 
         <ProgressBar
-                android:id="@+id/progressBar"
-                style="?android:attr/progressBarStyle"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:visibility="invisible"
-                app:layout_constraintBottom_toBottomOf="@+id/okButton"
-                app:layout_constraintEnd_toEndOf="@+id/okButton"
-                app:layout_constraintStart_toStartOf="@+id/okButton"
-                app:layout_constraintTop_toTopOf="@+id/okButton"
-                tools:visibility="visible" />
+            android:id="@+id/progressBar"
+            style="?android:attr/progressBarStyle"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:visibility="invisible"
+            app:layout_constraintBottom_toBottomOf="@+id/okButton"
+            app:layout_constraintEnd_toEndOf="@+id/okButton"
+            app:layout_constraintStart_toStartOf="@+id/okButton"
+            app:layout_constraintTop_toTopOf="@+id/okButton"
+            tools:visibility="visible" />
 
         <TextView
-                android:id="@+id/configDocsView"
-                android:layout_width="0dp"
-                android:layout_height="wrap_content"
-                android:layout_margin="16dp"
-                android:text="@string/config_docs"
-                app:layout_constraintEnd_toEndOf="parent"
-                app:layout_constraintStart_toStartOf="parent"
-                app:layout_constraintTop_toBottomOf="@+id/okButton" />
+            android:id="@+id/configDocsView"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_margin="16dp"
+            android:text="@string/config_docs"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/okButton" />
 
     </androidx.constraintlayout.widget.ConstraintLayout>
 
diff --git a/merchant-terminal/src/main/res/layout/fragment_merchant_history.xml b/merchant-terminal/src/main/res/layout/fragment_merchant_history.xml
index 21e6f08..8c7bd59 100644
--- a/merchant-terminal/src/main/res/layout/fragment_merchant_history.xml
+++ b/merchant-terminal/src/main/res/layout/fragment_merchant_history.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
+<?xml version="1.0" encoding="utf-8"?><!--
   ~ This file is part of GNU Taler
   ~ (C) 2020 Taler Systems S.A.
   ~
@@ -16,14 +15,14 @@
   -->
 
 <androidx.swiperefreshlayout.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"
-        android:id="@+id/swipeRefresh"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent">
+    android:id="@+id/swipeRefresh"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
 
     <androidx.recyclerview.widget.RecyclerView
-            android:id="@+id/list_history"
-            android:layout_width="match_parent"
-            android:layout_height="match_parent"
-            android:scrollbars="vertical" />
+        android:id="@+id/list_history"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:scrollbars="vertical" />
 
 </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
diff --git a/merchant-terminal/src/main/res/layout/fragment_order.xml b/merchant-terminal/src/main/res/layout/fragment_order.xml
index 4af9c77..dc49db1 100644
--- a/merchant-terminal/src/main/res/layout/fragment_order.xml
+++ b/merchant-terminal/src/main/res/layout/fragment_order.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
+<?xml version="1.0" encoding="utf-8"?><!--
   ~ This file is part of GNU Taler
   ~ (C) 2020 Taler Systems S.A.
   ~
@@ -16,123 +15,123 @@
   -->
 
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-        xmlns:app="http://schemas.android.com/apk/res-auto"
-        xmlns:tools="http://schemas.android.com/tools"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent">
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
 
     <androidx.fragment.app.FragmentContainerView
-            android:id="@+id/fragment1"
-            android:layout_width="0dp"
-            android:layout_height="0dp"
-            android:layout_marginBottom="8dp"
-            app:layout_constraintBottom_toTopOf="@+id/restartButton"
-            app:layout_constraintEnd_toStartOf="@+id/guideline1"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toTopOf="parent"
-            tools:layout="@layout/fragment_order_state" />
+        android:id="@+id/fragment1"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        android:layout_marginBottom="8dp"
+        app:layout_constraintBottom_toTopOf="@+id/restartButton"
+        app:layout_constraintEnd_toStartOf="@+id/guideline1"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:layout="@layout/fragment_order_state" />
 
     <androidx.constraintlayout.widget.Guideline
-            android:id="@+id/guideline1"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:orientation="vertical"
-            app:layout_constraintGuide_percent="0.25" />
+        android:id="@+id/guideline1"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        app:layout_constraintGuide_percent="0.25" />
 
     <androidx.fragment.app.FragmentContainerView
-            android:id="@+id/fragment2"
-            android:name="net.taler.merchantpos.order.ProductsFragment"
-            android:layout_width="0dp"
-            android:layout_height="0dp"
-            android:layout_marginBottom="8dp"
-            app:layout_constraintBottom_toTopOf="@+id/restartButton"
-            app:layout_constraintEnd_toStartOf="@+id/guideline2"
-            app:layout_constraintStart_toStartOf="@+id/guideline1"
-            app:layout_constraintTop_toTopOf="parent"
-            tools:layout="@layout/fragment_products" />
+        android:id="@+id/fragment2"
+        android:name="net.taler.merchantpos.order.ProductsFragment"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        android:layout_marginBottom="8dp"
+        app:layout_constraintBottom_toTopOf="@+id/restartButton"
+        app:layout_constraintEnd_toStartOf="@+id/guideline2"
+        app:layout_constraintStart_toStartOf="@+id/guideline1"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:layout="@layout/fragment_products" />
 
     <androidx.constraintlayout.widget.Guideline
-            android:id="@+id/guideline2"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:orientation="vertical"
-            app:layout_constraintGuide_percent="0.75" />
+        android:id="@+id/guideline2"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        app:layout_constraintGuide_percent="0.75" />
 
     <androidx.fragment.app.FragmentContainerView
-            android:id="@+id/fragment3"
-            android:name="net.taler.merchantpos.order.CategoriesFragment"
-            android:layout_width="0dp"
-            android:layout_height="0dp"
-            android:layout_marginBottom="8dp"
-            app:layout_constraintBottom_toTopOf="@+id/restartButton"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintStart_toStartOf="@+id/guideline2"
-            app:layout_constraintTop_toTopOf="parent"
-            tools:layout="@layout/fragment_categories" />
+        android:id="@+id/fragment3"
+        android:name="net.taler.merchantpos.order.CategoriesFragment"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        android:layout_marginBottom="8dp"
+        app:layout_constraintBottom_toTopOf="@+id/restartButton"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="@+id/guideline2"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:layout="@layout/fragment_categories" />
 
     <Button
-            android:id="@+id/restartButton"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_marginStart="8dp"
-            android:backgroundTint="@color/button_bottom"
-            android:text="@string/order_restart"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintStart_toStartOf="parent" />
+        android:id="@+id/restartButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:backgroundTint="@color/button_bottom"
+        android:text="@string/order_restart"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toStartOf="parent" />
 
     <Button
-            android:id="@+id/plusButton"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_marginStart="16dp"
-            android:minWidth="48dp"
-            android:text="+1"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintStart_toEndOf="@+id/minusButton"
-            tools:ignore="HardcodedText" />
+        android:id="@+id/plusButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="16dp"
+        android:minWidth="48dp"
+        android:text="+1"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toEndOf="@+id/minusButton"
+        tools:ignore="HardcodedText" />
 
     <Button
-            android:id="@+id/minusButton"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_marginStart="32dp"
-            android:minWidth="48dp"
-            android:text="-1"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintStart_toEndOf="@+id/restartButton"
-            tools:ignore="HardcodedText" />
+        android:id="@+id/minusButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="32dp"
+        android:minWidth="48dp"
+        android:text="-1"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toEndOf="@+id/restartButton"
+        tools:ignore="HardcodedText" />
 
     <Button
-            android:id="@+id/prevButton"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_marginStart="32dp"
-            android:backgroundTint="@color/button_bottom"
-            android:text="@string/order_previous"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintStart_toEndOf="@+id/plusButton" />
+        android:id="@+id/prevButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="32dp"
+        android:backgroundTint="@color/button_bottom"
+        android:text="@string/order_previous"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toEndOf="@+id/plusButton" />
 
     <Button
-            android:id="@+id/nextButton"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_marginStart="16dp"
-            android:backgroundTint="@color/button_bottom"
-            android:text="@string/order_next"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintStart_toEndOf="@+id/prevButton" />
+        android:id="@+id/nextButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="16dp"
+        android:backgroundTint="@color/button_bottom"
+        android:text="@string/order_next"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toEndOf="@+id/prevButton" />
 
     <Button
-            android:id="@+id/completeButton"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_marginStart="32dp"
-            android:layout_marginEnd="8dp"
-            android:backgroundTint="@color/button_bottom"
-            android:text="@string/order_complete"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintHorizontal_bias="1.0"
-            app:layout_constraintStart_toEndOf="@+id/nextButton" />
+        android:id="@+id/completeButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="32dp"
+        android:layout_marginEnd="8dp"
+        android:backgroundTint="@color/button_bottom"
+        android:text="@string/order_complete"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="1.0"
+        app:layout_constraintStart_toEndOf="@+id/nextButton" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/merchant-terminal/src/main/res/layout/fragment_order_state.xml b/merchant-terminal/src/main/res/layout/fragment_order_state.xml
index 7d6b258..42b7f90 100644
--- a/merchant-terminal/src/main/res/layout/fragment_order_state.xml
+++ b/merchant-terminal/src/main/res/layout/fragment_order_state.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
+<?xml version="1.0" encoding="utf-8"?><!--
   ~ This file is part of GNU Taler
   ~ (C) 2020 Taler Systems S.A.
   ~
@@ -16,37 +15,37 @@
   -->
 
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-        xmlns:app="http://schemas.android.com/apk/res-auto"
-        xmlns:tools="http://schemas.android.com/tools"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent">
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
 
     <androidx.recyclerview.widget.RecyclerView
-            android:id="@+id/orderList"
-            android:layout_width="0dp"
-            android:layout_height="0dp"
-            app:layout_constraintBottom_toTopOf="@+id/totalView"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toTopOf="parent"
-            tools:listitem="@layout/list_item_order" />
+        android:id="@+id/orderList"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        app:layout_constraintBottom_toTopOf="@+id/totalView"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:listitem="@layout/list_item_order" />
 
     <TextView
-            android:id="@+id/totalView"
-            android:layout_width="0dp"
-            android:layout_height="wrap_content"
-            android:background="@color/highlightedBackground"
-            android:elevation="2dp"
-            android:gravity="center_vertical|end"
-            android:padding="8dp"
-            android:textColor="?android:textColorPrimary"
-            android:textSize="16sp"
-            android:visibility="invisible"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@+id/orderList"
-            tools:text="Total: 23.75 TESTKUDOS"
-            tools:visibility="visible" />
+        android:id="@+id/totalView"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:background="@color/highlightedBackground"
+        android:elevation="2dp"
+        android:gravity="center_vertical|end"
+        android:padding="8dp"
+        android:textColor="?android:textColorPrimary"
+        android:textSize="16sp"
+        android:visibility="invisible"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/orderList"
+        tools:text="Total: 23.75 TESTKUDOS"
+        tools:visibility="visible" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/merchant-terminal/src/main/res/layout/fragment_payment_success.xml b/merchant-terminal/src/main/res/layout/fragment_payment_success.xml
index 1bc9be7..7ca3ddb 100644
--- a/merchant-terminal/src/main/res/layout/fragment_payment_success.xml
+++ b/merchant-terminal/src/main/res/layout/fragment_payment_success.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
+<?xml version="1.0" encoding="utf-8"?><!--
   ~ This file is part of GNU Taler
   ~ (C) 2020 Taler Systems S.A.
   ~
@@ -16,63 +15,63 @@
   -->
 
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-        xmlns:app="http://schemas.android.com/apk/res-auto"
-        xmlns:tools="http://schemas.android.com/tools"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        tools:context=".payment.PaymentSuccessFragment">
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".payment.PaymentSuccessFragment">
 
     <ImageView
-            android:id="@+id/paymentIcon"
-            android:layout_width="0dp"
-            android:layout_height="0dp"
-            android:layout_margin="16dp"
-            android:src="@drawable/ic_check_circle"
-            app:layout_constraintBottom_toTopOf="@+id/paymentLabel"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintHorizontal_bias="0.5"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toTopOf="parent"
-            app:layout_constraintVertical_chainStyle="spread_inside"
-            tools:ignore="ContentDescription" />
+        android:id="@+id/paymentIcon"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        android:layout_margin="16dp"
+        android:src="@drawable/ic_check_circle"
+        app:layout_constraintBottom_toTopOf="@+id/paymentLabel"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.5"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_chainStyle="spread_inside"
+        tools:ignore="ContentDescription" />
 
     <TextView
-            android:id="@+id/paymentLabel"
-            android:layout_width="0dp"
-            android:layout_height="0dp"
-            android:layout_margin="16dp"
-            android:gravity="center_horizontal|top"
-            android:text="@string/payment_received"
-            android:textColor="@color/green"
-            app:autoSizeMaxTextSize="42sp"
-            app:autoSizeTextType="uniform"
-            app:layout_constraintBottom_toTopOf="@+id/paymentButton"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@+id/paymentIcon" />
+        android:id="@+id/paymentLabel"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        android:layout_margin="16dp"
+        android:gravity="center_horizontal|top"
+        android:text="@string/payment_received"
+        android:textColor="@color/green"
+        app:autoSizeMaxTextSize="42sp"
+        app:autoSizeTextType="uniform"
+        app:layout_constraintBottom_toTopOf="@+id/paymentButton"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/paymentIcon" />
 
     <androidx.constraintlayout.widget.Guideline
-            android:id="@+id/guidelineLeft"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:orientation="vertical"
-            app:layout_constraintGuide_percent="0.25" />
+        android:id="@+id/guidelineLeft"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        app:layout_constraintGuide_percent="0.25" />
 
     <androidx.constraintlayout.widget.Guideline
-            android:id="@+id/guidelineRight"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:orientation="vertical"
-            app:layout_constraintGuide_percent="0.75" />
+        android:id="@+id/guidelineRight"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        app:layout_constraintGuide_percent="0.75" />
 
     <Button
-            android:id="@+id/paymentButton"
-            android:layout_width="0dp"
-            android:layout_height="wrap_content"
-            android:layout_margin="16dp"
-            android:text="@string/payment_back_button"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintEnd_toStartOf="@+id/guidelineRight"
-            app:layout_constraintStart_toStartOf="@+id/guidelineLeft" />
+        android:id="@+id/paymentButton"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_margin="16dp"
+        android:text="@string/payment_back_button"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toStartOf="@+id/guidelineRight"
+        app:layout_constraintStart_toStartOf="@+id/guidelineLeft" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/merchant-terminal/src/main/res/layout/fragment_products.xml b/merchant-terminal/src/main/res/layout/fragment_products.xml
index f0e86e7..ae5c85f 100644
--- a/merchant-terminal/src/main/res/layout/fragment_products.xml
+++ b/merchant-terminal/src/main/res/layout/fragment_products.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
+<?xml version="1.0" encoding="utf-8"?><!--
   ~ This file is part of GNU Taler
   ~ (C) 2020 Taler Systems S.A.
   ~
@@ -16,29 +15,29 @@
   -->
 
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-        xmlns:app="http://schemas.android.com/apk/res-auto"
-        android:layout_width="match_parent"
-        xmlns:tools="http://schemas.android.com/tools"
-        android:layout_height="match_parent">
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
 
     <androidx.recyclerview.widget.RecyclerView
-            android:id="@+id/productsList"
-            android:layout_width="0dp"
-            android:layout_height="0dp"
-            app:layout_constraintTop_toTopOf="parent"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintStart_toStartOf="parent"
-            tools:listitem="@layout/list_item_product" />
+        android:id="@+id/productsList"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:listitem="@layout/list_item_product" />
 
     <ProgressBar
-            android:id="@+id/progressBar"
-            style="?android:attr/progressBarStyleLarge"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toTopOf="parent" />
+        android:id="@+id/progressBar"
+        style="?android:attr/progressBarStyleLarge"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/merchant-terminal/src/main/res/layout/fragment_refund.xml b/merchant-terminal/src/main/res/layout/fragment_refund.xml
index 5a78cdd..944da55 100644
--- a/merchant-terminal/src/main/res/layout/fragment_refund.xml
+++ b/merchant-terminal/src/main/res/layout/fragment_refund.xml
@@ -15,108 +15,108 @@
   -->
 
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-        xmlns:app="http://schemas.android.com/apk/res-auto"
-        xmlns:tools="http://schemas.android.com/tools"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        tools:context=".history.RefundFragment">
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".history.RefundFragment">
 
     <com.google.android.material.textfield.TextInputLayout
-            android:id="@+id/amountView"
-            style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox.Dense"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_margin="16dp"
-            android:hint="@string/refund_amount"
-            app:boxBackgroundMode="outline"
-            app:endIconMode="clear_text"
-            app:endIconTint="?attr/colorControlNormal"
-            app:layout_constraintBottom_toTopOf="@+id/reasonView"
-            app:layout_constraintEnd_toStartOf="@+id/currencyView"
-            app:layout_constraintHorizontal_chainStyle="packed"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toTopOf="parent"
-            app:layout_constraintVertical_chainStyle="spread">
+        android:id="@+id/amountView"
+        style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox.Dense"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_margin="16dp"
+        android:hint="@string/refund_amount"
+        app:boxBackgroundMode="outline"
+        app:endIconMode="clear_text"
+        app:endIconTint="?attr/colorControlNormal"
+        app:layout_constraintBottom_toTopOf="@+id/reasonView"
+        app:layout_constraintEnd_toStartOf="@+id/currencyView"
+        app:layout_constraintHorizontal_chainStyle="packed"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_chainStyle="spread">
 
         <com.google.android.material.textfield.TextInputEditText
-                android:id="@+id/amountInputView"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:ems="6"
-                android:inputType="numberDecimal"
-                tools:text="23.42" />
+            android:id="@+id/amountInputView"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:ems="6"
+            android:inputType="numberDecimal"
+            tools:text="23.42" />
 
     </com.google.android.material.textfield.TextInputLayout>
 
     <TextView
-            android:id="@+id/currencyView"
-            android:layout_width="wrap_content"
-            android:layout_height="0dp"
-            android:layout_marginStart="8dp"
-            android:gravity="start|center_vertical"
-            app:layout_constraintBottom_toBottomOf="@+id/amountView"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintStart_toEndOf="@+id/amountView"
-            app:layout_constraintTop_toTopOf="@+id/amountView"
-            tools:text="TESTKUDOS" />
+        android:id="@+id/currencyView"
+        android:layout_width="wrap_content"
+        android:layout_height="0dp"
+        android:layout_marginStart="8dp"
+        android:gravity="start|center_vertical"
+        app:layout_constraintBottom_toBottomOf="@+id/amountView"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toEndOf="@+id/amountView"
+        app:layout_constraintTop_toTopOf="@+id/amountView"
+        tools:text="TESTKUDOS" />
 
     <com.google.android.material.textfield.TextInputLayout
-            android:id="@+id/reasonView"
-            style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox.Dense"
-            android:layout_width="0dp"
-            android:layout_height="wrap_content"
-            android:layout_margin="16dp"
-            android:hint="@string/refund_reason"
-            app:endIconMode="clear_text"
-            app:layout_constraintBottom_toTopOf="@+id/abortButton"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintHorizontal_bias="0.5"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@+id/amountView">
+        android:id="@+id/reasonView"
+        style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox.Dense"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_margin="16dp"
+        android:hint="@string/refund_reason"
+        app:endIconMode="clear_text"
+        app:layout_constraintBottom_toTopOf="@+id/abortButton"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.5"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/amountView">
 
         <com.google.android.material.textfield.TextInputEditText
-                android:id="@+id/reasonInputView"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:inputType="textAutoComplete|textAutoCorrect|textMultiLine" />
+            android:id="@+id/reasonInputView"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:inputType="textAutoComplete|textAutoCorrect|textMultiLine" />
 
     </com.google.android.material.textfield.TextInputLayout>
 
     <Button
-            android:id="@+id/abortButton"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_margin="16dp"
-            android:backgroundTint="@color/red"
-            android:text="@string/refund_abort"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintEnd_toStartOf="@+id/refundButton"
-            app:layout_constraintHorizontal_bias="0.76"
-            app:layout_constraintHorizontal_chainStyle="spread_inside"
-            app:layout_constraintStart_toStartOf="parent" />
+        android:id="@+id/abortButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_margin="16dp"
+        android:backgroundTint="@color/red"
+        android:text="@string/refund_abort"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toStartOf="@+id/refundButton"
+        app:layout_constraintHorizontal_bias="0.76"
+        app:layout_constraintHorizontal_chainStyle="spread_inside"
+        app:layout_constraintStart_toStartOf="parent" />
 
     <Button
-            android:id="@+id/refundButton"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_margin="16dp"
-            android:backgroundTint="@color/green"
-            android:text="@string/refund_confirm"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintHorizontal_bias="0.5"
-            app:layout_constraintStart_toEndOf="@+id/abortButton" />
+        android:id="@+id/refundButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_margin="16dp"
+        android:backgroundTint="@color/green"
+        android:text="@string/refund_confirm"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.5"
+        app:layout_constraintStart_toEndOf="@+id/abortButton" />
 
     <ProgressBar
-            android:id="@+id/progressBar"
-            style="?android:attr/progressBarStyle"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:visibility="invisible"
-            app:layout_constraintBottom_toBottomOf="@+id/refundButton"
-            app:layout_constraintEnd_toEndOf="@+id/refundButton"
-            app:layout_constraintStart_toStartOf="@+id/refundButton"
-            app:layout_constraintTop_toTopOf="@+id/refundButton"
-            tools:visibility="visible" />
+        android:id="@+id/progressBar"
+        style="?android:attr/progressBarStyle"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:visibility="invisible"
+        app:layout_constraintBottom_toBottomOf="@+id/refundButton"
+        app:layout_constraintEnd_toEndOf="@+id/refundButton"
+        app:layout_constraintStart_toStartOf="@+id/refundButton"
+        app:layout_constraintTop_toTopOf="@+id/refundButton"
+        tools:visibility="visible" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/merchant-terminal/src/main/res/layout/list_item_category.xml b/merchant-terminal/src/main/res/layout/list_item_category.xml
index cbdbd34..3cbc42c 100644
--- a/merchant-terminal/src/main/res/layout/list_item_category.xml
+++ b/merchant-terminal/src/main/res/layout/list_item_category.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
+<?xml version="1.0" encoding="utf-8"?><!--
   ~ This file is part of GNU Taler
   ~ (C) 2020 Taler Systems S.A.
   ~
@@ -16,18 +15,18 @@
   -->
 
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-        xmlns:app="http://schemas.android.com/apk/res-auto"
-        xmlns:tools="http://schemas.android.com/tools"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content">
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
 
     <Button
-            android:id="@+id/button"
-            android:layout_width="0dp"
-            android:layout_height="wrap_content"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toTopOf="parent"
-            tools:text="Snacks" />
+        android:id="@+id/button"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:text="Snacks" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/merchant-terminal/src/main/res/layout/list_item_history.xml b/merchant-terminal/src/main/res/layout/list_item_history.xml
index 57f85ef..08f45b7 100644
--- a/merchant-terminal/src/main/res/layout/list_item_history.xml
+++ b/merchant-terminal/src/main/res/layout/list_item_history.xml
@@ -15,82 +15,82 @@
   -->
 
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-        xmlns:app="http://schemas.android.com/apk/res-auto"
-        xmlns:tools="http://schemas.android.com/tools"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:padding="16dp">
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:padding="16dp">
 
     <TextView
-            android:id="@+id/orderSummaryView"
-            android:layout_width="0dp"
-            android:layout_height="wrap_content"
-            android:textColor="?android:attr/textColorPrimary"
-            android:textSize="20sp"
-            android:textStyle="bold"
-            app:layout_constraintEnd_toStartOf="@+id/orderAmountView"
-            app:layout_constraintHorizontal_bias="1.0"
-            app:layout_constraintHorizontal_chainStyle="spread_inside"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toTopOf="parent"
-            tools:text="One Cappuccino or another name that can be so long that it spans more than one line" />
+        android:id="@+id/orderSummaryView"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:textColor="?android:attr/textColorPrimary"
+        android:textSize="20sp"
+        android:textStyle="bold"
+        app:layout_constraintEnd_toStartOf="@+id/orderAmountView"
+        app:layout_constraintHorizontal_bias="1.0"
+        app:layout_constraintHorizontal_chainStyle="spread_inside"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:text="One Cappuccino or another name that can be so long that it spans more than one line" />
 
     <TextView
-            android:id="@+id/orderAmountView"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_marginStart="8dp"
-            android:layout_marginEnd="16dp"
-            android:textColor="?android:attr/textColorPrimary"
-            android:textSize="20sp"
-            android:textStyle="bold"
-            app:layout_constraintBottom_toBottomOf="@+id/orderSummaryView"
-            app:layout_constraintEnd_toStartOf="@+id/refundButton"
-            app:layout_constraintStart_toEndOf="@+id/orderSummaryView"
-            app:layout_constraintTop_toTopOf="parent"
-            app:layout_constraintVertical_bias="0.0"
-            tools:text="23.42 TESTKUDOS" />
+        android:id="@+id/orderAmountView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:layout_marginEnd="16dp"
+        android:textColor="?android:attr/textColorPrimary"
+        android:textSize="20sp"
+        android:textStyle="bold"
+        app:layout_constraintBottom_toBottomOf="@+id/orderSummaryView"
+        app:layout_constraintEnd_toStartOf="@+id/refundButton"
+        app:layout_constraintStart_toEndOf="@+id/orderSummaryView"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.0"
+        tools:text="23.42 TESTKUDOS" />
 
     <TextView
-            android:id="@+id/orderIdView"
-            android:layout_width="0dp"
-            android:layout_height="wrap_content"
-            android:layout_marginTop="8dp"
-            android:text="@string/history_ref_no"
-            android:textAllCaps="false"
-            android:textSize="20sp"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintEnd_toStartOf="@+id/orderTimeView"
-            app:layout_constraintHorizontal_bias="0.5"
-            app:layout_constraintHorizontal_chainStyle="spread_inside"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@+id/orderSummaryView" />
+        android:id="@+id/orderIdView"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        android:text="@string/history_ref_no"
+        android:textAllCaps="false"
+        android:textSize="20sp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toStartOf="@+id/orderTimeView"
+        app:layout_constraintHorizontal_bias="0.5"
+        app:layout_constraintHorizontal_chainStyle="spread_inside"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/orderSummaryView" />
 
     <TextView
-            android:id="@+id/orderTimeView"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_marginStart="8dp"
-            android:layout_marginTop="8dp"
-            android:layout_marginEnd="16dp"
-            android:textSize="20sp"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintEnd_toStartOf="@+id/refundButton"
-            app:layout_constraintStart_toEndOf="@+id/orderIdView"
-            app:layout_constraintTop_toBottomOf="@+id/orderAmountView"
-            app:layout_constraintVertical_bias="1.0"
-            tools:text="3 hrs. ago" />
+        android:id="@+id/orderTimeView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:layout_marginTop="8dp"
+        android:layout_marginEnd="16dp"
+        android:textSize="20sp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toStartOf="@+id/refundButton"
+        app:layout_constraintStart_toEndOf="@+id/orderIdView"
+        app:layout_constraintTop_toBottomOf="@+id/orderAmountView"
+        app:layout_constraintVertical_bias="1.0"
+        tools:text="3 hrs. ago" />
 
     <ImageButton
-            android:id="@+id/refundButton"
-            android:layout_width="48dp"
-            android:layout_height="48dp"
-            android:backgroundTint="?colorPrimary"
-            android:contentDescription="@string/history_refund"
-            android:tint="?attr/colorOnPrimary"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintTop_toTopOf="parent"
-            app:srcCompat="@drawable/ic_cash_refund" />
+        android:id="@+id/refundButton"
+        android:layout_width="48dp"
+        android:layout_height="48dp"
+        android:backgroundTint="?colorPrimary"
+        android:contentDescription="@string/history_refund"
+        android:tint="?attr/colorOnPrimary"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:srcCompat="@drawable/ic_cash_refund" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/merchant-terminal/src/main/res/layout/list_item_order.xml b/merchant-terminal/src/main/res/layout/list_item_order.xml
index f88364d..7651304 100644
--- a/merchant-terminal/src/main/res/layout/list_item_order.xml
+++ b/merchant-terminal/src/main/res/layout/list_item_order.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
+<?xml version="1.0" encoding="utf-8"?><!--
   ~ This file is part of GNU Taler
   ~ (C) 2020 Taler Systems S.A.
   ~
@@ -16,46 +15,46 @@
   -->
 
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-        xmlns:app="http://schemas.android.com/apk/res-auto"
-        xmlns:tools="http://schemas.android.com/tools"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:background="@drawable/selectable_background"
-        android:minHeight="48dp"
-        android:padding="8dp">
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:background="@drawable/selectable_background"
+    android:minHeight="48dp"
+    android:padding="8dp">
 
     <TextView
-            android:id="@+id/quantity"
-            android:layout_width="0dp"
-            android:layout_height="wrap_content"
-            android:gravity="end"
-            android:minWidth="24dp"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toTopOf="@+id/name"
-            app:layout_constraintVertical_bias="0.0"
-            tools:text="31" />
+        android:id="@+id/quantity"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:gravity="end"
+        android:minWidth="24dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="@+id/name"
+        app:layout_constraintVertical_bias="0.0"
+        tools:text="31" />
 
     <TextView
-            android:id="@+id/name"
-            android:layout_width="0dp"
-            android:layout_height="wrap_content"
-            android:layout_marginStart="8dp"
-            android:layout_marginEnd="8dp"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintEnd_toStartOf="@+id/price"
-            app:layout_constraintStart_toEndOf="@+id/quantity"
-            app:layout_constraintTop_toTopOf="parent"
-            tools:text="An order product item that in some cases could have a very long name" />
+        android:id="@+id/name"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:layout_marginEnd="8dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toStartOf="@+id/price"
+        app:layout_constraintStart_toEndOf="@+id/quantity"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:text="An order product item that in some cases could have a very long name" />
 
     <TextView
-            android:id="@+id/price"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintTop_toTopOf="@+id/name"
-            app:layout_constraintVertical_bias="0.0"
-            tools:text="23.42" />
+        android:id="@+id/price"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="@+id/name"
+        app:layout_constraintVertical_bias="0.0"
+        tools:text="23.42" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/merchant-terminal/src/main/res/layout/list_item_product.xml b/merchant-terminal/src/main/res/layout/list_item_product.xml
index 1037bef..6ef3611 100644
--- a/merchant-terminal/src/main/res/layout/list_item_product.xml
+++ b/merchant-terminal/src/main/res/layout/list_item_product.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
+<?xml version="1.0" encoding="utf-8"?><!--
   ~ This file is part of GNU Taler
   ~ (C) 2020 Taler Systems S.A.
   ~
@@ -16,40 +15,40 @@
   -->
 
 <com.google.android.material.card.MaterialCardView xmlns:android="http://schemas.android.com/apk/res/android"
-        xmlns:app="http://schemas.android.com/apk/res-auto"
-        xmlns:tools="http://schemas.android.com/tools"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:layout_margin="4dp"
-        android:clickable="true"
-        android:focusable="true"
-        app:cardUseCompatPadding="true">
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:layout_margin="4dp"
+    android:clickable="true"
+    android:focusable="true"
+    app:cardUseCompatPadding="true">
 
     <androidx.constraintlayout.widget.ConstraintLayout
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:padding="8dp">
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:padding="8dp">
 
         <TextView
-                android:id="@+id/name"
-                android:layout_width="0dp"
-                android:layout_height="wrap_content"
-                android:textColor="?android:textColorPrimary"
-                android:textStyle="bold"
-                app:layout_constraintEnd_toEndOf="parent"
-                app:layout_constraintStart_toStartOf="parent"
-                app:layout_constraintTop_toTopOf="parent"
-                tools:text="Steak and two Eggs" />
+            android:id="@+id/name"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:textColor="?android:textColorPrimary"
+            android:textStyle="bold"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            tools:text="Steak and two Eggs" />
 
         <TextView
-                android:id="@+id/price"
-                android:layout_width="0dp"
-                android:layout_height="wrap_content"
-                android:layout_marginTop="8dp"
-                android:textColor="?android:textColorSecondary"
-                app:layout_constraintEnd_toEndOf="parent"
-                app:layout_constraintTop_toBottomOf="@+id/name"
-                tools:text="7.95" />
+            android:id="@+id/price"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="8dp"
+            android:textColor="?android:textColorSecondary"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/name"
+            tools:text="7.95" />
 
     </androidx.constraintlayout.widget.ConstraintLayout>
 
diff --git a/merchant-terminal/src/main/res/layout/nav_header_main.xml b/merchant-terminal/src/main/res/layout/nav_header_main.xml
index 14bbd51..50fff26 100644
--- a/merchant-terminal/src/main/res/layout/nav_header_main.xml
+++ b/merchant-terminal/src/main/res/layout/nav_header_main.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
+<?xml version="1.0" encoding="utf-8"?><!--
   ~ This file is part of GNU Taler
   ~ (C) 2020 Taler Systems S.A.
   ~
@@ -16,40 +15,40 @@
   -->
 
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-        xmlns:app="http://schemas.android.com/apk/res-auto"
-        xmlns:tools="http://schemas.android.com/tools"
-        android:layout_width="match_parent"
-        android:layout_height="@dimen/nav_header_height"
-        android:background="@drawable/side_nav_bar"
-        android:gravity="bottom"
-        android:orientation="vertical"
-        android:paddingLeft="@dimen/activity_horizontal_margin"
-        android:paddingTop="@dimen/activity_vertical_margin"
-        android:paddingRight="@dimen/activity_horizontal_margin"
-        android:paddingBottom="@dimen/activity_vertical_margin"
-        android:theme="@style/AppTheme">
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="@dimen/nav_header_height"
+    android:background="@drawable/side_nav_bar"
+    android:gravity="bottom"
+    android:orientation="vertical"
+    android:paddingLeft="@dimen/activity_horizontal_margin"
+    android:paddingTop="@dimen/activity_vertical_margin"
+    android:paddingRight="@dimen/activity_horizontal_margin"
+    android:paddingBottom="@dimen/activity_vertical_margin"
+    android:theme="@style/AppTheme">
 
     <ImageView
-            android:id="@+id/imageView"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:paddingTop="@dimen/nav_header_vertical_spacing"
-            app:srcCompat="@mipmap/ic_taler_logo_round"
-            tools:ignore="ContentDescription" />
+        android:id="@+id/imageView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:paddingTop="@dimen/nav_header_vertical_spacing"
+        app:srcCompat="@mipmap/ic_taler_logo_round"
+        tools:ignore="ContentDescription" />
 
     <TextView
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:paddingTop="@dimen/nav_header_vertical_spacing"
-            android:text="@string/project_name"
-            android:textAppearance="@style/TextAppearance.AppCompat.Body1"
-            android:textColor="#FFF" />
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:paddingTop="@dimen/nav_header_vertical_spacing"
+        android:text="@string/project_name"
+        android:textAppearance="@style/TextAppearance.AppCompat.Body1"
+        android:textColor="#FFF" />
 
     <TextView
-            android:id="@+id/textView"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:text="@string/app_name_short"
-            android:textColor="#FFF" />
+        android:id="@+id/textView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/app_name_short"
+        android:textColor="#FFF" />
 
 </LinearLayout>
diff --git a/merchant-terminal/src/main/res/menu/activity_main_drawer.xml b/merchant-terminal/src/main/res/menu/activity_main_drawer.xml
index 1303605..3f71a69 100644
--- a/merchant-terminal/src/main/res/menu/activity_main_drawer.xml
+++ b/merchant-terminal/src/main/res/menu/activity_main_drawer.xml
@@ -1,5 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
+<?xml version="1.0" encoding="utf-8"?><!--
   ~ This file is part of GNU Taler
   ~ (C) 2020 Taler Systems S.A.
   ~
@@ -16,21 +15,21 @@
   -->
 
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
-        xmlns:tools="http://schemas.android.com/tools"
-        tools:showIn="navigation_view">
+    xmlns:tools="http://schemas.android.com/tools"
+    tools:showIn="navigation_view">
 
     <group android:checkableBehavior="single">
         <item
-                android:id="@+id/nav_order"
-                android:icon="@drawable/ic_move_money_24dp"
-                android:title="@string/menu_order" />
+            android:id="@+id/nav_order"
+            android:icon="@drawable/ic_move_money_24dp"
+            android:title="@string/menu_order" />
         <item
-                android:id="@+id/nav_history"
-                android:icon="@drawable/ic_history_black_24dp"
-                android:title="@string/menu_history" />
+            android:id="@+id/nav_history"
+            android:icon="@drawable/ic_history_black_24dp"
+            android:title="@string/menu_history" />
         <item
-                android:id="@+id/nav_settings"
-                android:icon="@drawable/ic_menu_manage"
-                android:title="@string/menu_settings" />
+            android:id="@+id/nav_settings"
+            android:icon="@drawable/ic_menu_manage"
+            android:title="@string/menu_settings" />
     </group>
 </menu>
diff --git a/merchant-terminal/src/main/res/mipmap-anydpi-v26/ic_taler_logo.xml b/merchant-terminal/src/main/res/mipmap-anydpi-v26/ic_taler_logo.xml
index c4a603d..00f9eaa 100644
--- a/merchant-terminal/src/main/res/mipmap-anydpi-v26/ic_taler_logo.xml
+++ b/merchant-terminal/src/main/res/mipmap-anydpi-v26/ic_taler_logo.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@drawable/ic_launcher_background"/>
-    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@mipmap/ic_launcher_foreground" />
 </adaptive-icon>
\ No newline at end of file
diff --git a/merchant-terminal/src/main/res/mipmap-anydpi-v26/ic_taler_logo_round.xml b/merchant-terminal/src/main/res/mipmap-anydpi-v26/ic_taler_logo_round.xml
index c4a603d..00f9eaa 100644
--- a/merchant-terminal/src/main/res/mipmap-anydpi-v26/ic_taler_logo_round.xml
+++ b/merchant-terminal/src/main/res/mipmap-anydpi-v26/ic_taler_logo_round.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@drawable/ic_launcher_background"/>
-    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@mipmap/ic_launcher_foreground" />
 </adaptive-icon>
\ No newline at end of file
-- 
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