move miscellaneous to settings sub-menu for quick access

add csrf token check for settings and its environments

ui/ui/maintenance-mode.tpl

@@ -59,6 +59,7 @@
 </style>
 
 <form class="form-horizontal" method="post" autocomplete="off" role="form" action="">
+    <input type="hidden" name="csrf_token" value="{$csrf_token}">
     <div class="row">
         <div class="col-sm-12 col-md-12">
             <div class="panel panel-primary panel-hovered panel-stacked mb30">