Basic RModel implementation (untested).
Ads: Use RModel. Make basic functionality work.
RModel: Support ordering. Updated Ads.
Custom where clause.
Automagic join clause.
SQL count() sink.
Where clause helper in RModel.
Adapt Message/View to RModel.
Message/trash.
Message/delete.
Message::sendMsg and Message/send action.
RModel::get() helper function.
Message/read
Message/detail
Group/find and like clause for RModel.
Group/detail.
Group/build and Group/edit.
Remove automagic join: not used.
Adapt Tree and Category to RModel.
Finish all basic Group actions.