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

This reverts commit 9f396178ce.

modules/server_add/views/server_add_tree_dialog.html.php

@@ -34,7 +34,7 @@
       <?= t("Add") ?>
     </button>
 
-    <button class="ui-state-default ui-corner-all" onclick="closeDialog(); window.location.reload();">
+    <button class="ui-state-default ui-corner-all" onclick="closeDialog(); $.gallery_reload();">
       <?= t("Close") ?>
     </button>
   </span>