Update to SimpleWebRTC 1.8.2
Reduce hark poll frequency and use a very high threslhold
So speaking events won't be fired (we don't use them) but volume will still be analyzed
to warn when no sound is detected
Warning if webcam access is refused
Fix #41
Add a small delay after the DOM is ready to start SimpleWebRTC
Seems to reduce the chance to have a permissionDeniedError on Chrome
See https://github.com/HenrikJoreteg/SimpleWebRTC/issues/127
Wait a bit before enabling owner's action button
As all the channels have to be ready first