Aldert,
Using the translation server for discussion is a good idea, but a record of discussion will probably be lost when the server is updated. For that reason the dotLRN development forum is probably a good place for the discussion. I doubt there would be any resistance to a discussion taking place in Dutch, just start a new Dutch thread.
I gave you admin privileges on the NL community. You should have all the needed privileges for testing the class you added. Right now there are no department or subject based privileges, although this is something (along with faculty based privileges) that dotLRN will eventually need as large institutions like our own go live.
Carl