Steps to reproduce
------------------
* Create a payment mode with "Link to Bank Account" = "Variable".
* Select several journals.
* Create a payment order with that payment mode.
* Save.
* Go to other menu and come back to payment order.
* Try to select a journal: the list is empty.
Fixes#544
context of payment orders, she should ocus on the amount that
is due to be paid. In this method we are forcing to display both
the amount due in company and in the invoice currency.
We then hide the fields debit and credit, because they add no value.
* 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.
* IMP: extensibility of _prepare_move
Pass the list of bank lines to _prepare_move so it is possible to customize the move (eg it's name) based on the lines being paid.
* FIX: payment order: add missing onchange dependencies in move selection wizard
Take into account all the remaining remarks of Frederic Clementi dated May 30:
- see multi-currency amounts in the wizard to add transaction lines
- add help msg on bank payment lines
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
