fix variable access and storing of removed property, fixes #4485

Closes #4485

Merge request studip/studip!3271

app/controllers/calendar/calendar.php

@@ -815,7 +815,7 @@ class Calendar_CalendarController extends AuthenticatedController
             CSRFProtection::verifySecurityToken();
             $range_id = Context::getId() ?? User::findCurrent()->id;
             $calendar_import = new ICalendarImport($range_id);
-            $calendar_import->convertPublicToPrivate(Request::bool('import_as_private_imp'));
+            $calendar_import->convertPublicToPrivate(Request::bool('import_privat', false));
             $calendar_import->import(file_get_contents($_FILES['importfile']['tmp_name']));
             $import_count = $calendar_import->getCountEvents();
             PageLayout::postSuccess(sprintf(

lib/classes/calendar/ICalendarImport.class.php

@@ -352,7 +352,6 @@ class ICalendarImport
         $date->access = $properties['CLASS'] ?? 'PRIVATE';
         $date->user_category = $properties['CATEGORIES'];
         $date->category = $properties['STUDIP_CATEGORY'] ?: 1;
-        $date->priority = $properties['PRIORITY'] ?? '';
         $date->location = $properties['LOCATION'];
         if (is_array($properties['EXDATE'])) {
             foreach ($properties['EXDATE'] as $exdate) {