refactor(sidebar): move sidebar toggling item controller to separate service

src/app/theme/components/baSidebar/baSidebarHelpers.directive.js

@@ -9,6 +9,7 @@
       .directive('baSidebarToggleMenu', baSidebarToggleMenu)
       .directive('baSidebarCollapseMenu', baSidebarCollapseMenu)
       .directive('baSidebarTogglingItem', baSidebarTogglingItem)
+      .controller('BaSidebarTogglingItemCtrl', BaSidebarTogglingItemCtrl)
       .directive('baUiSrefTogglingSubmenu', baUiSrefTogglingSubmenu)
       .directive('baUiSrefToggler', baUiSrefToggler);
 
@@ -45,10 +46,15 @@
   }
 
   /** @ngInject */
-  function baSidebarTogglingItem($state, baSidebarService) {
+  function baSidebarTogglingItem() {
     return {
       restrict: 'A',
-      controller: function ($scope, $element, $attrs) {
+      controller: 'BaSidebarTogglingItemCtrl'
+    };
+  }
+
+  /** @ngInject */
+  function BaSidebarTogglingItemCtrl($scope, $element, $attrs, $state, baSidebarService) {
     var vm = this;
     var menuItem = vm.$$menuItem = $scope.$eval($attrs.baSidebarTogglingItem);
     if (menuItem && menuItem.subMenu && menuItem.subMenu.length) {
@@ -98,8 +104,6 @@
           });
     }
   }
-    };
-  }
 
   /** @ngInject */
   function baUiSrefTogglingSubmenu($state) {