Merge pull request #1359 from juhasch/fix/tree-filter

Fix tree-filter not loading anymore with notebook 5.7

Author: juhasch

src/jupyter_contrib_nbextensions/nbextensions/tree-filter/index.js

@@ -4,7 +4,7 @@
 
 define([
     'require',
-    'jqueryui',
+    'jquery',
     'base/js/namespace',
     'base/js/utils',
     'services/config'