Active speaker user interface improvements and fixes.
Adds a button for recording.
Fixes problem when unpinning user and returning to active speaker video.
Fixes issue with StatsCollector when the conference is recreated the peerconnection in the StatsCollector isn't updated.
Add instructions for enabling recoridng.
Fix a typo (thanks, Fippo!)
Merge pull request #74 from turint/master

Adds debian packaging.
jitsi-meet.example and README added