'saving' message and disable button to prevent multi-click
diff --git a/planetstack/templates/admin/dashboard/customize.html b/planetstack/templates/admin/dashboard/customize.html
index 3f1d2c6..274040e 100644
--- a/planetstack/templates/admin/dashboard/customize.html
+++ b/planetstack/templates/admin/dashboard/customize.html
@@ -65,6 +65,8 @@
         });

     });

     $('#btn-save').bind('click', function() {

+         $( "#btn-save").unbind()

+         $( "#btn-save" ).html("<div class='loading'>Saving ...</div>");

          var items=[];

          $("#select-to option").each(function() { items.push($(this).val()); });

          $.ajax({