Add route

plugins/webui/interface/urls.py

     #(r'/show/(?P<id>.*)$', show_document),
     (r'^/list_classes', list_classes),
     #(r'^/show_object/(.+)$', show_object),
-    (r'^/show_object/?$', show_object),
+    (r'^/show_object?$', show_object),
     #(r'^/show_class/(.+)$', show_class),
-    (r'^/show_class/?$', show_class)
+    (r'^/show_class?$', show_class)
 )