Add ADB Keys tab.

res/app/settings/general/language/index.js

@@ -0,0 +1,10 @@
+module.exports = angular.module('stf-ui-language', [
+  require('stf/settings').name,
+  require('stf/language').name
+])
+  .run(["$templateCache", function ($templateCache) {
+    $templateCache.put(
+      'settings/general/language/language.jade', require('./language.jade')
+    )
+  }])
+  .controller('LanguageCtrl', require('./language-controller'))