added more base cat

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@806 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/PropertySheet/Assignment.py

@@ -37,4 +37,4 @@ class Assignment(Path):
   _properties = (
   )
 
-  _categories = ('activity', 'function','grade', 'role', 'skill', 'destination')
+  _categories = ('activity', 'function', 'grade', 'role', 'skill', 'destination', 'group', 'product', )