i18n: Add new languages: ace (Acehnese), ha (Hausa), yo (Yoruba)

These are all still showing 0% translated in Transifex, so it's not
yet time to offer them in the UI. Perhaps soon!

Author: chrisbobbe

flow-typed/translations.js

@@ -8,6 +8,10 @@ declare module '\''../../$_'\'' {
          ' >>flow-typed/translations.js
  */
 
+declare module '../../static/translations/messages_ace.json' {
+  declare export default {| [string]: string |};
+}
+
 declare module '../../static/translations/messages_am.json' {
   declare export default {| [string]: string |};
 }
@@ -100,6 +104,10 @@ declare module '../../static/translations/messages_gu.json' {
   declare export default {| [string]: string |};
 }
 
+declare module '../../static/translations/messages_ha.json' {
+  declare export default {| [string]: string |};
+}
+
 declare module '../../static/translations/messages_hi.json' {
   declare export default {| [string]: string |};
 }
@@ -248,6 +256,10 @@ declare module '../../static/translations/messages_vi.json' {
   declare export default {| [string]: string |};
 }
 
+declare module '../../static/translations/messages_yo.json' {
+  declare export default {| [string]: string |};
+}
+
 declare module '../../static/translations/messages_yue.json' {
   declare export default {| [string]: string |};
 }

src/i18n/messagesByLanguage.js

@@ -13,6 +13,7 @@
 // language names: they have the names given to them by the `tx` Transifex
 // client, which are based on the language names that appear in Transifex.
 export default {
+  ace: require('../../static/translations/messages_ace.json'),
   am: require('../../static/translations/messages_am.json'),
   ar: require('../../static/translations/messages_ar.json'),
   be: require('../../static/translations/messages_be.json'),
@@ -35,6 +36,7 @@ export default {
   fr: require('../../static/translations/messages_fr.json'),
   gl: require('../../static/translations/messages_gl.json'),
   gu: require('../../static/translations/messages_gu.json'),
+  ha: require('../../static/translations/messages_ha.json'),
   hi: require('../../static/translations/messages_hi.json'),
   hr: require('../../static/translations/messages_hr.json'),
   hu: require('../../static/translations/messages_hu.json'),
@@ -72,6 +74,7 @@ export default {
   ur: require('../../static/translations/messages_ur.json'),
   uz: require('../../static/translations/messages_uz.json'),
   vi: require('../../static/translations/messages_vi.json'),
+  yo: require('../../static/translations/messages_yo.json'),
   yue: require('../../static/translations/messages_yue.json'),
   'zh-Hans': require('../../static/translations/messages_zh-Hans.json'),
   'zh-Hant': require('../../static/translations/messages_zh-Hant.json'),