Issue generated from Tuleap's migration script. Originally submitted by: Nicolas Jager (nicolasjager-sfl)

hi,

the summoner of a conference knows that the call is a conference trough :

Call::Type::CONFERENCE

but for the participants, the conference is like usual call :

Call::Type::CURRENT

wich leads to have two previews on participants screens. I propose to add a new state and let the conference summoner to tell to the participants that they are currently involved in a conference with it.

In that case we could shutdown the preview.