Changing properties on a planned order line should update the corresponding simulation, for invoice and accouting.

Rule: propagate values from prevision in _getCompensatedMovementList
InvoiceTransactionRule & InvoicingRule: add properties in _generatePrevision (project, function, payment)
testInvoice: tests that changes on the order line are reflected in invoice and accounting simulation



git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@20955 20353a03-c40f-0410-a6d1-a30d3c3de9de