populate the language setting from the TAPi18n object

collections/settings.js

@@ -157,7 +157,16 @@ settingsSchemaObject = {
     optional: true,
     autoform: {
       group: 'general',
-      instructions: 'The two-letter code for the app\'s language. Defaults to "en".'
+      instructions: 'The app\'s language. Defaults to English.',
+      options: function () {
+        var languages = _.map(TAPi18n.languages_available_for_project, function (item, key) {
+          return {
+            value: key,
+            label: item[0]
+          }
+        });
+        return languages
+      }
     }
   },
   backgroundCSS: {