* Pay Sheet Model must also be of amount_generator group.
* fixed a incorrect argument passing between PaySheetTransaction_applyModel and PaySheetTransaction_copySubObject.

XXX However, is the function copy sub objects, already implemented in other method?

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@33790 20353a03-c40f-0410-a6d1-a30d3c3de9de