switch/application/admin/view/common/meta.html

<meta charset="utf-8">
<title>{$title|default=''}</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
<meta name="renderer" content="webkit">

<link rel="shortcut icon" href="__CDN__/assets/img/favicon.ico" />
<!-- Loading Bootstrap -->
<link href="__CDN__/assets/css/backend{$Think.config.app_debug?'':'.min'}.css?v={$Think.config.site.version}" rel="stylesheet">

<!-- HTML5 shim, for IE6-8 support of HTML5 elements. All other JS at the end of file. -->
<!--[if lt IE 9]>
  <script src="__CDN__/assets/js/html5shiv.js"></script>
  <script src="__CDN__/assets/js/respond.min.js"></script>
<![endif]-->
<script type="text/javascript">
    var require = {
        config:  {$config|json_encode}
    };
</script>