use relative link to upload

includes/sidebar.inc

@@ -20,7 +20,7 @@
     Katalogisér <i class="flag icon"></i>
   </a>
   <div class="content">
-    <a class="item" href="http://marcus.uib.no/admin/upload.html">
+    <a class="item" href="//admin/upload.html">
       <i class="upload icon"></i> Last opp
     </a>
     <a class="item" href="{{lodspk.home}}search/?filter=isCatalogued%23Ikke%20katalogisert">