REFACTOR: Add urls for admin groups, make it more idiomatic ember

app/assets/javascripts/admin/controllers/admin_groups_controller.js

@@ -1,49 +1,23 @@
-Discourse.AdminGroupsController = Ember.Controller.extend({
-  itemController: 'adminGroup',
+Discourse.AdminGroupsController = Ember.ArrayController.extend({
+  sortProperties: ['name'],
+
+  refreshingAutoGroups: false,
 
   actions: {
-    edit: function(group){
-      this.get('model').select(group);
-      group.loadUsers();
-    },
-
     refreshAutoGroups: function(){
-      var self = this;
+      var self = this,
+          groups = this.get('model');
 
       self.set('refreshingAutoGroups', true);
-      Discourse.ajax('/admin/groups/refresh_automatic_groups', {type: 'POST'}).then(function() {
-        return Discourse.Group.findAll().then(function(groups) {
-          self.set('model', groups);
-          self.set('refreshingAutoGroups', false);
-        });
-      });
-    },
-
-    newGroup: function(){
-      var group = Discourse.Group.create({ loadedUsers: true, visible: true }),
-          model = this.get("model");
-      model.addObject(group);
-      model.select(group);
-    },
-
-    save: function(group){
-      if(!group.get("id")){
-        group.create();
-      } else {
-        group.save();
-      }
-    },
-
-    destroy: function(group){
-      var self = this;
-      return bootbox.confirm(I18n.t("admin.groups.delete_confirm"), I18n.t("no_value"), I18n.t("yes_value"), function(result) {
-        if (result) {
-          group.destroy().then(function(deleted) {
-            if (deleted) {
-              self.get("model").removeObject(group);
-            }
+      this.transitionToRoute('adminGroups.index').then(function() {
+        Discourse.ajax('/admin/groups/refresh_automatic_groups', {type: 'POST'}).then(function() {
+          return Discourse.Group.findAll().then(function(newGroups) {
+            groups.clear();
+            groups.addObjects(newGroups);
+          }).finally(function() {
+            self.set('refreshingAutoGroups', false);
           });
-        }
+        });
       });
     }
   }