With this implementation the can publish audio & video permission are
set during the creation of the 'CallActivity'. This permissions are
fixed for the complete call. If the permissions are changed by a
moderator the call must be left and joined again.
Resolves: #1783
Signed-off-by: Tim Krüger <t@timkrueger.me>
Now the 'can ignore lobby' permission is respected.
The 'ChatController' has now a property of the type
'ParticipantPermissions' because it's needed multiple times. The
property will be updated in 'ChatController#getRoomInfo' if the
conversation is protected by a lobby.
The function 'Conversation#shouldShowLobby' is removed in this commit.
'Conversation' is a pure model class to hold the plain JSON response.
The logic is moved into the already existing function 'ChatController#shouldShowLobby'.
Resolves: #1783
Signed-off-by: Tim Krüger <t@timkrueger.me>
