✨ Removed pow, alertModal and fixed storage

frontend/src/routes/import/+page.svelte

@@ -35,17 +35,19 @@
 		if (res.status === 200) {
 			window.location.href = '/dashboard';
 		} else if (res.status === 400) {
-			alertModal.set({
+			/*			alertModal.set({
 				open: true,
 				title: 'Import failed',
 				body: "This quiz isn't (yet) supported!"
-			});
+			});*/
+			alert("This quiz isn't (yet) supported!");
 		} else {
-			alertModal.set({
+			/*			alertModal.set({
 				open: true,
 				title: 'Import failed',
 				body: 'Unknown error while importing the quiz!'
-			});
+			});*/
+			alert('Import failed with unknown reason');
 		}
 		is_loading = false;
 	};
@@ -61,11 +63,12 @@
 		if (res.status === 200) {
 			window.location.href = '/dashboard';
 		} else {
-			alertModal.set({
+			/*			alertModal.set({
 				open: true,
 				title: 'Import failed',
 				body: 'Something went wrong!'
-			});
+			});*/
+			alert('Something went wrong!');
 		}
 		is_loading = false;
 	};