Add button "Add to payment/debit order" on invoice form view
Started to integrate payment transfer in account_payment_order (not finished at all though)
Various fixes/changes/improvements/...
Move the inherit of the 'Invoice' button of payment.order from account_banking_payment_transfer to account_banking_payment_export
Demo data: Add a bank account + mandate on Agrolait, to be able to easily test multi-partner SEPA DD
We drop the bank statement related part and we manage
the state of payment order with workflow transitions
triggered by the reconciliation of moves lines on the
transfer account.