Select microphone and test it with loopback in mic settings.
Show audio activity
Activity level without loopback true
Test microphones without test button
Use Nellymoser codec to test activity.
Add references.
Warn user if microphone has no activity.
Slider for microphone record volume.
Use microphone selected in join audio dialog during the session.
Indicate the user has to click ALLOW in Chrome.
Merge branch 'audiosettings' of github.com:gugat/bigbluebutton
Merge branch 'master' into audiosettings
Merge branch 'master' of github.com:bigbluebutton/bigbluebutton into audiosettings