better check for payment: if source & dest. are in the same group, usage of a

bank account should be checked on both sides, otherwise only check for section.

use class atributes rather than storing in sequence.



git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@10058 20353a03-c40f-0410-a6d1-a30d3c3de9de