BLD-1110: Create, edit, delete groups.

cms/static/js/models/group.js

@@ -1,13 +1,15 @@
 define([
-    'backbone', 'gettext', 'backbone.associations'
-], function(Backbone, gettext) {
+    'backbone', 'underscore', 'underscore.string', 'gettext',
+    'backbone.associations'
+], function(Backbone, _, str, gettext) {
     'use strict';
     var Group = Backbone.AssociatedModel.extend({
         defaults: function() {
             return {
                 name: '',
-                version: null
-            };
+                version: null,
+                order: null
+             };
         },
 
         isEmpty: function() {
@@ -16,13 +18,14 @@ define([
 
         toJSON: function() {
             return {
+                id: this.get('id'),
                 name: this.get('name'),
                 version: this.get('version')
              };
         },
 
         validate: function(attrs) {
-            if (!attrs.name) {
+            if (!str.trim(attrs.name)) {
                 return {
                     message: gettext('Group name is required'),
                     attributes: { name: true }