Disco needs a Join Button under some circumstances shown
does MUC but can't browse Join button
does MUC can browse Create Room button
in reality they do the same thing, so it's just a Join but with a better string in the 2nd situation
does MUC but can't browse Join button
does MUC can browse Create Room button
in reality they do the same thing, so it's just a Join but with a better string in the 2nd situation