add test ids for casper tests

src/js/react_views/IntlHelperBarView.jsx

@@ -29,46 +29,55 @@ var IntlHelperBarView = React.createClass({
   getItems: function() {
     return [{
       text: 'Git Branching',
+      testID: 'english',
       onClick: function() {
         this.fireCommand('locale en_US; levels');
       }.bind(this)
     }, {
       text: '日本語版リポジトリ',
+      testID: 'japanese',
       onClick: function() {
         this.fireCommand('locale ja; levels');
       }.bind(this)
     }, {
       text: 'Git 브랜치 배우기',
+      testID: 'korean',
       onClick: function() {
         this.fireCommand('locale ko; levels');
       }.bind(this)
     }, {
       text: '学习 Git 分支',
+      testID: 'simplifiedChinese',
       onClick: function() {
         this.fireCommand('locale zh_CN; levels');
       }.bind(this)
     }, {
       text: '學習 Git 分支',
+      testID: 'traditionalChinese',
       onClick: function() {
         this.fireCommand('locale zh_TW; levels');
       }.bind(this)
     }, {
       text: 'español',
+      testID: 'spanish',
       onClick: function() {
         this.fireCommand('locale es_AR; levels');
       }.bind(this)
     }, {
       text: 'português',
+      testID: 'portuguese',
       onClick: function() {
         this.fireCommand('locale pt_BR; levels');
       }.bind(this)
     }, {
       text: 'français',
+      testID: 'french',
       onClick: function() {
         this.fireCommand('locale fr_FR; levels');
       }.bind(this)
     }, {
       text: 'Deutsch',
+      testID: 'german',
       onClick: function() {
         this.fireCommand('locale de_DE; levels');
       }.bind(this)