the condition changable. This fixes a bug tested on
test_tradeModelLineWithEmptyBaseContributionMovement.
Override the condition in PaymentCondition and make PaymentCondition
appliable to any movements.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@35473 20353a03-c40f-0410-a6d1-a30d3c3de9de