[Web] Feature (beta): Add WebAuthn support for administrators and domain administrators

data/web/inc/ajax/qr_gen.php

@@ -1,13 +1,10 @@
 <?php
-session_start();
 require_once $_SERVER['DOCUMENT_ROOT'] . '/inc/prerequisites.inc.php';
 header('Content-Type: text/plain');
 if (!isset($_SESSION['mailcow_cc_role'])) {
 	exit();
 }
-
 if (isset($_GET['token']) && ctype_alnum($_GET['token'])) {
   echo $tfa->getQRCodeImageAsDataUri($_SESSION['mailcow_cc_username'], $_GET['token']);
 }
-
 ?>