enable / disable webrtc
Merge pull request #309 from gugat/webrtc-bbbconf

enable / disable webrtc
 - start implementing echo test and join conference using webrtc
 - add bin-debug dir to ignore
i - do echo test and then join voice conference using webrtc
 - figure out how to display mic permissions for FF and Chrome
 - display different mic setting for ff and chrome
Small change to test build
 - continue implementing mic settings for webrtc
reformatting of commands to enable/disable webRTC support
 - implement user joining voice using webrtc
Merge branch 'merge-polling-with-master' of github.com:bigbluebutton/bigbluebutton into merge-polling-with-master
 - implement flow for user to join vonce conf uwing webrtc
Merge branch 'split-mic-settings-dialog' into merge-polling-with-master
Merge branch 'master' into merge-polling-with-master

Conflicts:
	bigbluebutton-config/bin/bbb-conf
 - start implementing joining voice using flash
 - continue implementing join voice using flash
 - add new commands
 - show elcome message in chat window
 - disable flash calling for webrtc testing