Revert "Revert "Allow a theme to override the page refresh mechanism. Create a new""

This reverts commit 9f396178ce.

modules/gallery/views/admin_maintenance_task.html.php

@@ -47,7 +47,7 @@
   $(".gProgressBar").progressbar({value: 0});
   update();
   dismiss = function() {
-    window.location.reload();
+    $.gallery_reload();
   }
 </script>
 <div id="gProgress">