Added alert when failing to delete NS

frontend/static/js/admin.js

@@ -245,7 +245,10 @@ function upload_database() {
 		if (e === 400) {
 			import_inputs.file.value = '';
 			import_inputs.button.innerText = 'Import Database';
-			alert('Invalid database file');
+			setTimeout(
+				() => alert('Invalid database file'),
+				10
+			);
 		 } else
 			console.log(e);
 	});

frontend/static/js/notification.js

@@ -172,6 +172,10 @@ function deleteService(id) {
 			const delete_button = row.querySelector('button[title="Delete"]');
 			delete_button.classList.add('error-icon');
 			delete_button.title = `The notification service is still in use by a ${e.result.type}`;
+			setTimeout(
+				() => alert(`The notification service is still in use by a ${e.result.type}`),
+				10
+			);
 		} else
 			console.log(e);
 	});