--- a/web/webconfig.py	Fri Jun 26 13:04:25 2015 +0200
+++ b/web/webconfig.py	Thu Jun 25 22:12:49 2015 +0200
@@ -375,9 +375,9 @@
             if exists(fpath):
                 yield join(fpath)
 
-    def load_configuration(self):
+    def load_configuration(self, **kw):
         """load instance's configuration files"""
-        super(WebConfiguration, self).load_configuration()
+        super(WebConfiguration, self).load_configuration(**kw)
         # load external resources definition
         self._init_base_url()
         self._build_ui_properties()