I just talked to Joerg on the phone and here comes the first update so
far. As you know, Joerg has been sick with fever the last week and was
unable to start the project. He is back on track now and has started
to go deep into the code.
This is his plan for implementing the proposal:
i) First adapt the database model to the new features (article
history, new user groups).
ii) Provide functions and interface to access the new data fields.
iii) Give meanings to the new user groups.
P.S. Brion, is it possible to contact you by phone again? I told Joerg
that you are the person to ask in case of questions about the code