* Add bank.payment.lines object to allow grouping in the payments
* Add a hook to inherit grouping of the transfer account move line
Use that new hook in SEPA direct debits
Better variable names
* FIX Reading wrong field for sequence type of SEPA DD
Loop on bank payment lines instead of payment lines
* Update automated tests and demo data
* Add on_change on field 'type' of payment.mode for easier configuration
