- the local participant was not added when the conference is started from scratch
- the conference reINVITE was accidentally turning off implicit avpf.

Optimize fetching of friends from database (there's absolutely no need to save a friend when fetching from DB).

This macro tells GCC that a 'break' statement has been deliberately
omitted in a switch block.

Fix chat message count that was incremented only after the application is notified of the incoming message.