A/V conference now adds user metadata about the stream it is forwarding through XEP-0298.
This is parsed and added to metadata during confirmation on client side.
rel 448
- jingle session management is now correctly handled, with id of the Galène client used as
prefix when necessary.
- Galène is now run only when component session is started, avoiding systematic run on
__init__.
- Galène ICE logs are displayed with high verbosity.
- Fix disco identity handling
rel 447