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diff --git a/modern/src/common/components/LocalizationProvider.jsx b/modern/src/common/components/LocalizationProvider.jsx
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+++ b/modern/src/common/components/LocalizationProvider.jsx
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+/* eslint-disable import/no-relative-packages */
+import React, {
+  createContext, useContext, useEffect, useMemo,
+} from 'react';
+import moment from 'moment';
+import 'moment/min/locales.min';
+
+import af from '../../resources/l10n/af.json';
+import ar from '../../resources/l10n/ar.json';
+import az from '../../resources/l10n/az.json';
+import bg from '../../resources/l10n/bg.json';
+import bn from '../../resources/l10n/bn.json';
+import ca from '../../resources/l10n/ca.json';
+import cs from '../../resources/l10n/cs.json';
+import da from '../../resources/l10n/da.json';
+import de from '../../resources/l10n/de.json';
+import el from '../../resources/l10n/el.json';
+import en from '../../resources/l10n/en.json';
+import es from '../../resources/l10n/es.json';
+import fa from '../../resources/l10n/fa.json';
+import fi from '../../resources/l10n/fi.json';
+import fr from '../../resources/l10n/fr.json';
+import gl from '../../resources/l10n/gl.json';
+import he from '../../resources/l10n/he.json';
+import hi from '../../resources/l10n/hi.json';
+import hr from '../../resources/l10n/hr.json';
+import hu from '../../resources/l10n/hu.json';
+import id from '../../resources/l10n/id.json';
+import it from '../../resources/l10n/it.json';
+import ja from '../../resources/l10n/ja.json';
+import ka from '../../resources/l10n/ka.json';
+import kk from '../../resources/l10n/kk.json';
+import km from '../../resources/l10n/km.json';
+import ko from '../../resources/l10n/ko.json';
+import lo from '../../resources/l10n/lo.json';
+import lt from '../../resources/l10n/lt.json';
+import lv from '../../resources/l10n/lv.json';
+import ml from '../../resources/l10n/ml.json';
+import mn from '../../resources/l10n/mn.json';
+import ms from '../../resources/l10n/ms.json';
+import nb from '../../resources/l10n/nb.json';
+import ne from '../../resources/l10n/ne.json';
+import nl from '../../resources/l10n/nl.json';
+import nn from '../../resources/l10n/nn.json';
+import pl from '../../resources/l10n/pl.json';
+import pt from '../../resources/l10n/pt.json';
+import ptBR from '../../resources/l10n/pt_BR.json';
+import ro from '../../resources/l10n/ro.json';
+import ru from '../../resources/l10n/ru.json';
+import si from '../../resources/l10n/si.json';
+import sk from '../../resources/l10n/sk.json';
+import sl from '../../resources/l10n/sl.json';
+import sq from '../../resources/l10n/sq.json';
+import sr from '../../resources/l10n/sr.json';
+import sv from '../../resources/l10n/sv.json';
+import ta from '../../resources/l10n/ta.json';
+import th from '../../resources/l10n/th.json';
+import tr from '../../resources/l10n/tr.json';
+import uk from '../../resources/l10n/uk.json';
+import uz from '../../resources/l10n/uz.json';
+import vi from '../../resources/l10n/vi.json';
+import zh from '../../resources/l10n/zh.json';
+import zhTW from '../../resources/l10n/zh_TW.json';
+import usePersistedState from '../util/usePersistedState';
+
+const languages = {
+  af: { data: af, countryCode: 'ZA', name: 'Afrikaans' },
+  ar: { data: ar, countryCode: 'AE', name: 'العربية' },
+  az: { data: az, countryCode: 'AZ', name: 'Azərbaycanca' },
+  bg: { data: bg, countryCode: 'BG', name: 'Български' },
+  bn: { data: bn, countryCode: 'IN', name: 'বাংলা' },
+  ca: { data: ca, countryCode: 'ES', name: 'Català' },
+  cs: { data: cs, countryCode: 'CZ', name: 'Čeština' },
+  de: { data: de, countryCode: 'DE', name: 'Deutsch' },
+  da: { data: da, countryCode: 'DK', name: 'Dansk' },
+  el: { data: el, countryCode: 'GR', name: 'Ελληνικά' },
+  en: { data: en, countryCode: 'US', name: 'English' },
+  es: { data: es, countryCode: 'ES', name: 'Español' },
+  fa: { data: fa, countryCode: 'IR', name: 'فارسی' },
+  fi: { data: fi, countryCode: 'FI', name: 'Suomi' },
+  fr: { data: fr, countryCode: 'FR', name: 'Français' },
+  gl: { data: gl, countryCode: 'ES', name: 'Galego' },
+  he: { data: he, countryCode: 'IL', name: 'עברית' },
+  hi: { data: hi, countryCode: 'IN', name: 'हिन्दी' },
+  hr: { data: hr, countryCode: 'HR', name: 'Hrvatski' },
+  hu: { data: hu, countryCode: 'HU', name: 'Magyar' },
+  id: { data: id, countryCode: 'ID', name: 'Bahasa Indonesia' },
+  it: { data: it, countryCode: 'IT', name: 'Italiano' },
+  ja: { data: ja, countryCode: 'JP', name: '日本語' },
+  ka: { data: ka, countryCode: 'GE', name: 'ქართული' },
+  kk: { data: kk, countryCode: 'KZ', name: 'Қазақша' },
+  ko: { data: ko, countryCode: 'KR', name: '한국어' },
+  km: { data: km, countryCode: 'KH', name: 'ភាសាខ្មែរ' },
+  lo: { data: lo, countryCode: 'LA', name: 'ລາວ' },
+  lt: { data: lt, countryCode: 'LT', name: 'Lietuvių' },
+  lv: { data: lv, countryCode: 'LV', name: 'Latviešu' },
+  ml: { data: ml, countryCode: 'IN', name: 'മലയാളം' },
+  mn: { data: mn, countryCode: 'MN', name: 'Монгол хэл' },
+  ms: { data: ms, countryCode: 'MY', name: 'بهاس ملايو' },
+  ne: { data: ne, countryCode: 'NP', name: 'नेपाली' },
+  nl: { data: nl, countryCode: 'NL', name: 'Nederlands' },
+  nb: { data: nb, countryCode: 'NO', name: 'Norsk bokmål' },
+  nn: { data: nn, countryCode: 'NO', name: 'Norsk nynorsk' },
+  pl: { data: pl, countryCode: 'PL', name: 'Polski' },
+  pt: { data: pt, countryCode: 'PT', name: 'Português' },
+  ptBR: { data: ptBR, countryCode: 'BR', name: 'Português (Brasil)' },
+  ro: { data: ro, countryCode: 'RO', name: 'Română' },
+  ru: { data: ru, countryCode: 'RU', name: 'Русский' },
+  si: { data: si, countryCode: 'LK', name: 'සිංහල' },
+  sk: { data: sk, countryCode: 'SK', name: 'Slovenčina' },
+  sl: { data: sl, countryCode: 'SI', name: 'Slovenščina' },
+  sq: { data: sq, countryCode: 'AL', name: 'Shqipëria' },
+  sr: { data: sr, countryCode: 'RS', name: 'Srpski' },
+  sv: { data: sv, countryCode: 'SE', name: 'Svenska' },
+  ta: { data: ta, countryCode: 'IN', name: 'தமிழ்' },
+  th: { data: th, countryCode: 'TH', name: 'ไทย' },
+  tr: { data: tr, countryCode: 'TR', name: 'Türkçe' },
+  uk: { data: uk, countryCode: 'UA', name: 'Українська' },
+  uz: { data: uz, countryCode: 'UZ', name: 'Oʻzbekcha' },
+  vi: { data: vi, countryCode: 'VN', name: 'Tiếng Việt' },
+  zh: { data: zh, countryCode: 'CN', name: '中文' },
+  zhTW: { data: zhTW, countryCode: 'TW', name: '中文 (Taiwan)' },
+};
+
+const getDefaultLanguage = () => {
+  const browserLanguages = window.navigator.languages ? window.navigator.languages.slice() : [];
+  const browserLanguage = window.navigator.userLanguage || window.navigator.language;
+  browserLanguages.push(browserLanguage);
+  browserLanguages.push(browserLanguage.substring(0, 2));
+
+  for (let i = 0; i < browserLanguages.length; i += 1) {
+    let language = browserLanguages[i].replace('-', '');
+    if (language in languages) {
+      return language;
+    }
+    if (language.length > 2) {
+      language = language.substring(0, 2);
+      if (language in languages) {
+        return language;
+      }
+    }
+  }
+  return 'en';
+};
+
+const LocalizationContext = createContext({
+  languages,
+  language: 'en',
+  setLanguage: () => {},
+});
+
+export const LocalizationProvider = ({ children }) => {
+  const [language, setLanguage] = usePersistedState('language', getDefaultLanguage());
+
+  const value = useMemo(() => ({ languages, language, setLanguage }), [languages, language, setLanguage]);
+
+  useEffect(() => {
+    let selected;
+    if (language === 'zh') {
+      selected = 'zh-cn';
+    } else if (language.length > 2) {
+      selected = `${language.slice(0, 2)}-${language.slice(-2).toLowerCase()}`;
+    } else {
+      selected = language;
+    }
+    moment.locale([selected, 'en']);
+  }, [language]);
+
+  return (
+    <LocalizationContext.Provider value={value}>
+      {children}
+    </LocalizationContext.Provider>
+  );
+};
+
+export const useLocalization = () => useContext(LocalizationContext);
+
+export const useTranslation = () => {
+  const context = useContext(LocalizationContext);
+  const { data } = context.languages[context.language];
+  return useMemo(() => (key) => data[key], [data]);
+};
+
+export const useTranslationKeys = (predicate) => {
+  const context = useContext(LocalizationContext);
+  const { data } = context.languages[context.language];
+  return Object.keys(data).filter(predicate);
+};
+
+export const getFlagEmoji = (countryCode) => {
+  const codePoints = countryCode
+    .toUpperCase()
+    .split('')
+    .map((char) => 127397 + char.charCodeAt());
+  return String.fromCodePoint(...codePoints);
+};