add the 'source' base category

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@2677 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/PropertySheet/BankAccount.py

@@ -60,4 +60,4 @@ class BankAccount:
             'mode'        : 'w' },
     )
 
-    _categories = ( 'region', )
+    _categories = ( 'region', 'source')