Language selection

Also, update RTL settings based on language (see "language_is_rtl" key in language file(s), defaults to false). Issue #147.

src/assets/translations/en.json

@@ -1,4 +1,5 @@
 {
+  "language_display_name": "English",
   "Keanu Weblite": "Keanu Weblite",
   "menu": {
     "start_private_chat": "Private chat with this user",
@@ -113,6 +114,7 @@
     "set_password": "Set password",
     "change_name": "Change name",
     "change_password": "Change password",
+    "select_language": "Language",
     "password_old": "Old password",
     "password_new": "New password",
     "password_repeat": "Repeat new password",

src/assets/translations/es.json

@@ -1,4 +1,5 @@
 {
+    "language_display_name": "Español",
     "room_info": {
         "identity": "Has iniciado sesión como {displayName}.",
         "my_profile": "Mi perfil",
@@ -183,4 +184,4 @@
         "view_details": "Ver detalles",
         "this_room": "Este grupo"
     }
-}
+}

src/assets/translations/ug.json

@@ -1,4 +1,5 @@
 {
+    "language_is_rtl": true,
     "menu": {
         "ok": "تامام",
         "download": "چۈشۈرۈش",
@@ -6,4 +7,4 @@
         "edit": "تەھرىر"
     },
     "Keanu Weblite": "Keanu Weblite"
-}
+}