Make <link>s relative

Fixes #9

Author: Ivoz

_layouts/simple.html

@@ -21,17 +21,17 @@
   <meta property="fb:admins" content="825782113" />
 
 
-  <link rel="icon" href="/favicon.ico" type="image/png">
+  <link rel="icon" href="favicon.ico" type="image/png">
   <meta name="viewport" content="width=device-width,initial-scale=1">
 
   <!-- CSS concatenated and minified via ant build script-->
   <!--[if lte IE 9]><link rel="stylesheet" href="css/ie.css" type="text/css" media="screen" /><![endif]-->
 
 
   <link rel="stylesheet" href="stylesheets/style.css?v=2">
-  <link rel="stylesheet" href="/stylesheets/grid.css" media="screen"/>
-  <link rel="stylesheet" href="/stylesheets/mobile.css" media="handheld, only screen and (max-device-width:640px)"/>
-  <link rel="stylesheet" href="/stylesheets/calendar.css" media="screen"/>
+  <link rel="stylesheet" href="stylesheets/grid.css" media="screen"/>
+  <link rel="stylesheet" href="stylesheets/mobile.css" media="handheld, only screen and (max-device-width:640px)"/>
+  <link rel="stylesheet" href="stylesheets/calendar.css" media="screen"/>
 
   <!-- end CSS-->
 </head>
@@ -116,4 +116,3 @@ <h1 class="workshop_title">
   </script>
 </body>
 </html>
-