* lib/sepa.php: fixed SEPA FRST / RCUR detection
* lib/sepa.php: fixed FRST SEPA XML generation
* htdocs/direct_debit/index.php: fixed HTML layout
* htdocs/direct_debit/sepa.php: chmod -x
* htdocs/direct_debit/cfonb.php: chmod -x
* htdocs/direct_debit/detail.php:
* htdocs/direct_debit/index.php: improved HTML/CSS layout
* lib/sepa.php: clean