[SSE mobile] removed ES6 features

apps/spreadsheeteditor/mobile/app/controller/Editor.js

@@ -101,11 +101,11 @@ define([
                 this.editorView = this.createView('Editor').render();
 
                 $$(window).on('resize', _.bind(this.onWindowResize, this));
-                Common.NotificationCenter.on('layout:changed', (source, args) => {
+                Common.NotificationCenter.on('layout:changed', function(source, args) {
                     if ( source == 'navbar' ) {
                         this.editorView.$el.find('.page.editor')[args.hidden?'addClass':'removeClass']('no-padding');
                     }
-                });
+                }.bind(this));
             },
 
             onWindowResize: function(e) {

apps/spreadsheeteditor/mobile/app/view/Statusbar.js

@@ -106,7 +106,7 @@ define([
             },
 
             addSheet: function(model) {
-                let index = this.$boxTabs.children().length;
+                var index = this.$boxTabs.children().length;
                 var $item = $(this.tabtemplate({
                     'label': model.get('name')
                 })).appendTo(this.$boxTabs)