Conference layout: lookup on hashes from conferences infos

Receiving conferences infos with participants not in the contact list will show the hash. The client-qt should perform a lookup on the name server to get the username if possible

changed milestone to %Later

added 1 deleted label

changed milestone to %Backlog

removed milestone %Backlog

assigned to @mzhang

changed time estimate to 2d

changed milestone to %Backlog

mentioned in issue #631 (closed)

closed