fixed item delete loader

src/luedittable.js

                         }
                         var promiseDelItems = {
                             id: "promiseDelItems",
-                            loadGroups: [$scope.tableOptions.luBusy.group]
+                            loaderGroups: [$scope.tableOptions.luBusy.group]
                         };
                         var item = $scope.tableOptions.checkedItems[0];
                         $scope.tableOptions.getDelPromise(item, promiseDelItems)