[BS5] change form-group

data/web/templates/oauth/authorize.twig

@@ -11,7 +11,7 @@
       <dd>{{ lang.oauth2.profile_desc }}</dd>
     </dl>
     <form class="form-horizontal" autocapitalize="none" autocorrect="off" role="form" method="post">
-      <div class="form-group">
+      <div class="row">
         <div class="col-sm-10 text-center">
           <button class="btn btn-success" name="authorized" type="submit" value="1">{{ lang.oauth2.permit }}</button>
           <a href="#" class="btn btn-secondary" onclick="window.history.back()" role="button">{{ lang.oauth2.deny }}</a>