Merge branch 'activate-more-languages' into 'master'

Activate more languages in front-end

See merge request framasoft/mobilizon!677

js/src/i18n/langs.json

@@ -5,13 +5,17 @@
   "cs": "čeština",
   "de": "Deutsch",
   "en": "English",
+  "eo": "Esperanto",
   "es": "Español",
   "fi": "suomi",
   "fr": "Français",
   "gl": "Galego",
+  "hu": "Magyar nyelv",
   "it": "Italiano",
   "ja": "日本語",
+  "kn": "Kannada",
   "nl": "Dutch",
+  "nn": "Nynorsk",
   "oc": "Occitan",
   "pl": "Polski",
   "pt": "Português",