confirm delete action

Controller/AbstractAdminController.php

@@ -508,6 +508,7 @@ abstract class AbstractAdminController extends EaAbstractCrudController
                         'icon' => 'trash',
                         'dropdown' => true,
                         'label' => $this->get(TranslatorAdmin::class)->transAction('delete'),
+                        'class' => 'dropdown-item text-danger in-dropdown action-delete',
                 ]
         );