make layout scale for mobile

templates/layout.html

@@ -10,6 +10,7 @@
 <meta http-equiv="expires" content="0" />
 <meta name="robots" content="index" />
 <meta name="revisit-after" content="1 days" />
+<meta name="viewport" content="width=device-width, initial-scale=1">
 <link rel="stylesheet" type="text/css" href="css/theme%theme%.css" />
 <link rel="stylesheet" type="text/css" href="vendor/icomoon/style.css" />
 <script type="text/javascript" src="vendor/jquery-2.1.1.min.js"></script>