Disable transform for document_author in document listings and default view.
Document author: Added event handler wich resolves userids to fullname.
Added upgradestep which resolves userid as document_author.
Moved all subscribers from in to the subscribers.py.
Cleanup document.py: Moved all views and viewlets in to a seperate file and right directory.
Merge pull request #71 from 4teamwork/pg_document_author_rebuild

Rebuild the document_author functionality