cleanup before backend returns

oml/user/api.py

@@ -348,6 +348,7 @@ def sortLists(data):
     '''
     n = 0
     logger.debug('sortLists %s', data)
+    lists = []
     for id in data['ids']:
         l = models.List.get(id)
         l.index_ = n

static/js/utils.js

@@ -432,6 +432,7 @@ oml.enableDragAndDrop = function($list, canMove) {
             ) {
                 var targets = drag.action == 'copy' ? drag.target.id
                     : [oml.user.ui._list, drag.target.id];
+                cleanup(250);
                 oml.doHistory(drag.action, data.ids, targets, function() {
                     Ox.Request.clearCache('find');
                     oml.api.find({
@@ -449,7 +450,6 @@ oml.enableDragAndDrop = function($list, canMove) {
                             drag.target.id, 'items', result.data.items
                         );
                         */
-                        cleanup(250);
                     });
                     oml.$ui.folders.updateItems();
                     if (drag.action == 'move') {