This implements affiliation listing for /affiliation. There's still lots of rough edges, but it does the job.
A missing feature would be to only show the affiliation of a single user.
I don't like how I have to handle the XML directly myself in the resulting IQs. All this because of missing interfaces in the slixmpp MUC plugin.
I also have an issue with the tab that doesn't get refreshed, see comments inline. That's fixed.
Signed-off-by: Maxime “pep” Buquet pep@bouah.net