feat(menuClose): do not show next back button

When navigating to a view from a button/link with the `menuClose`
attribute directive, the back button should not show for the next view.

js/angular/directive/menuClose.js

@@ -28,6 +28,7 @@ IonicModule
           // lower priority than navAnimation which allows navTransition
           // to override this directive's nextTransition() call
           $ionicViewSwitcher.nextTransition('none');
+          $ionicViewSwitcher.nextShowBack(false);
           sideMenuCtrl.close();
         }
       });