Removed lib/sepa-direct-debit and use external Debian package called
'php-sepa-direct-debit' I just uploaded
Renamed CFONB to SEPA
* test/migrate_rib_to_iban.php: better SQL indentation
* test/migrate_rib_to_iban.php: this script is now callable from any path on the
  system
* test/migrate_rib_to_iban.php: check if BIC exists before altering the database