fix admin reoladTree callback

fix admin leftPanel render method
fix admin reorder submit callback
remove usless images

templates/web/admin/databases.html.twig

@@ -1,6 +1,6 @@
 {% if reloadTree %}
     <script type="text/javascript">
-        reloadTree('bases:bases');
+        AdminApp.LeftView.reloadTree('bases:bases');
     </script>
 {% endif %}