[otrs] OTRS Development Community - is there one?

Hello List, i am trying to add some features to OTRS since a few days. Since i am new to OTRS i am having a hard time going through the code. However, i almost did it and need some help. The dev@otrs.org Mailing List seems to be pretty dead. Where can i go with questions regarding to the otrs source code? I would maybe also like some to review the code so that i can commit it to the community. This is about adding a manditory customer field to a few pages. Cheers, Mario