functionality between the deprecated module and base_iban
[IMP] Disregard spaces when comparing IBAN, as we can now no longer
assume that IBANs are in the legacy account_banking formatting
[FIX] Model and class name
[FIX] Keep and improve the account number expansion in res.partner.bank::search().
We need to search for the prettified IBANs as stored in the database.
Maybe any matching up until now was by BBAN conversion?