dded missing Predicate Property Sheet.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@12101 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/WebSite.py

@@ -121,6 +121,7 @@ class WebSite(WebSection):
                       , PropertySheet.CategoryCore
                       , PropertySheet.DublinCore
                       , PropertySheet.WebSite
+                      , PropertySheet.Predicate
                       )
 
     web_section_key = WEBSITE_KEY