Allow to re-auth by using the U2F token

src/pretix/static/pretixbase/scss/_theme.scss

@@ -104,6 +104,9 @@
     -moz-osx-font-smoothing: grayscale;
   }
 }
+.sr-only.alert::before {
+  background: none !important;
+}
 .alert-success::before {
   background: $state-success-border;
   content: "\f00c";

src/pretix/static/pretixcontrol/js/ui/u2f.js

@@ -31,7 +31,7 @@ $(function () {
                 if (data.errorCode && data.errorCode != 5) {
                     $("#u2f-error").removeClass("sr-only");
                 } else {
-                    $('#u2f-response').val(JSON.stringify(data));
+                    $('#u2f-response, #id_password').val(JSON.stringify(data));
                     $('#u2f-form').submit();
                 }
             }, 300);