Case: After the configuration of a debit order and generating the .xml file, user can't download it from the next step screen using the download link.
This fix makes the .xml file downloadable from the .xml file name as it was in older versions
When you haven't still generated the file, `generated_user_id` is not filled, and
so, you can't control the language in which the payment order is going to be printed.
Adding a condition for using the user language in that case makes this more
comfortable.
* 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.
