Add support for trade_condition_type

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@27136 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/PropertySheet/TradeCondition.py

@@ -68,5 +68,6 @@ class TradeCondition:
   )
 
   _categories = ( 'group', 'activity', 'incoterm',
-                  'price_currency', 'delivery_mode', )
+                  'price_currency', 'delivery_mode',
+                  'trade_condition_type',  )