* Removed deprecated YAML tests.
* Removed document dependency, as now there's no attachment dropdown.
* Switched deprecated `compute` method of res.currency.
* Restored missing field `reference_type` in invoices.
* Fixed call to `message_post`.
* Added missing description in model.
When adding to a payment order from invoices, the payment mode
considered is the one in the invoice, but once you have confirmed it,
you can't change it, so if you change the payment mode in the journal
items, it doesn't make the difference.
With this change, this is taken into account for adding to the
payment order(s) properly.
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.
