also allow admins to set the primary email

- there will be times when it is necessary to reset this value for sure

Signed-off-by: Arthur Schiwon <blizzz@arthur-schiwon.de>

apps/provisioning_api/lib/Controller/UsersController.php

@@ -777,6 +777,7 @@ class UsersController extends AUserData {
 				$permittedFields[] = IAccountManager::PROPERTY_WEBSITE;
 				$permittedFields[] = IAccountManager::PROPERTY_TWITTER;
 				$permittedFields[] = self::USER_FIELD_QUOTA;
+				$permittedFields[] = self::USER_FIELD_NOTIFICATION_EMAIL;
 			} else {
 				// No rights
 				throw new OCSException('', OCSController::RESPOND_NOT_FOUND);