Bon soir Etienne,
i've updated the german language files. As you know there were some new phrases added by you since my first translation.
The files german_formal.php and german_sie.php are identical, so you can leave one of them out. To ease your pain while having this hard decision, i've added the updated german_sie.php as well. ;)
Adieu et encore une fois, merci pour ton développement!