bugfixes and optimizations

- update translation
- remove bankaccount info from cod payment template
- TxStatus InvoiceCreate onPaid refactored: order has to be saved after pay (didn't happen for Authorization Advance Payment)
- P1EXT-221 bankgroup for NL
show online bank transfer fields dependent on sub type, not billing country
bugfix for onlinebanktransfer
fix: restrict payment methods by addresscheck personstatus result
Fix composer type
Merge pull request #14 from quafzi/fix-composer-package-type

Fix composer package type
add Klarna as Payment-Method
add sepa
bugfix birthday is required, prevent notification for debitpayment (sepa)
Merge pull request #1 from PAYONE/master

reintegration