fix(core): Column Menu Hidden by Hiding Column

Fixes the column menu being hidden when columns are
removed.

Closes #3953

Author: JLLeitschuh

src/js/core/directives/ui-grid-header-cell.js

@@ -223,8 +223,10 @@
               }
               contents.addClass(classAdded);
 
-              var rightMostContainer = $scope.grid.renderContainers['right'] ? $scope.grid.renderContainers['right'] : $scope.grid.renderContainers['body'];
-              $scope.isLastCol = ( $scope.col === rightMostContainer.visibleColumnCache[ rightMostContainer.visibleColumnCache.length - 1 ] );
+              $timeout(function (){
+                var rightMostContainer = $scope.grid.renderContainers['right'] ? $scope.grid.renderContainers['right'] : $scope.grid.renderContainers['body'];
+                $scope.isLastCol = ( $scope.col === rightMostContainer.visibleColumnCache[ rightMostContainer.visibleColumnCache.length - 1 ] );
+              });
 
               // Figure out whether this column is sortable or not
               if (uiGridCtrl.grid.options.enableSorting && $scope.col.enableSorting) {