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'))

res/app/settings/general/language/language-controller.js

@@ -0,0 +1,9 @@
+module.exports = function ($scope, LanguageService, SettingsService) {
+  SettingsService.bind($scope, {
+    target: 'language'
+  , source: LanguageService.settingKey
+  , defaultValue: LanguageService.detectedLanguage
+  })
+
+  $scope.supportedLanguages = LanguageService.supportedLanguages
+}

res/app/settings/general/language/language.jade

@@ -0,0 +1,8 @@
+.widget-container.fluid-height(ng-controller='LanguageCtrl')
+  .heading
+    i.fa.fa-flag
+    span(translate) Language
+  .widget-content.padded
+    .form-horizontal
+      .form-group
+        select.form-control(ng-model='language', ng-options='key as value for (key, value) in supportedLanguages')