change to use document.referrer instead of history.back()

seems to be enough to not just reload from cache

Author: tj

static/voted.html

@@ -100,7 +100,7 @@
     </div>
     <script>
       setTimeout(function(){
-        window.history.back()
+        window.location.href = document.referrer
       }, 2000)
     </script>
   </body>