* FIX: Bug #353 crash when selecting a payment mode that has a variable link to a bank account
* FIX: Add 'post_move' option on account.payment.mode with default True, to keep the previous behavior
* IMP: Explicit error when bank account is missing on bank journal
* IMP: Add field default_date_prefered on payment mode.
* Fix crash when selecting a customer that has a direct debit payment mode but no mandate
* Hide many fields when payment_order_ok is False on a payment_mode
* Fix payment line communication when the move line is not linked to an invoice (problem found when porting donation_debit_debit to v9)
* For the communication field, if self.move_id.ref is False, fallback on self.move_id.name
Improvements include:
- full re-organisation of modules and big re-organisation of the code
- simplification of the code related to the fact that support for direct debit is now in t
he base module, not added by an optional module account_direct_debit (module was removed)
- new design of the wizard to select move lines to pay
- support for non-SEPA file transfer-
- support for German direct debit SEPA files (fixes bug #129)
- remove workflow of payment.order
- add wizard of selection of move lines to pay
