add variation to the category list

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@9068 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Banking/PropertySheet/CashDeliveryLine.py

@@ -37,4 +37,5 @@ class CashDeliveryLine:
 
   _categories = ( 'emission_letter'
                 , 'cash_status'
+                , 'variation'
                 )