fixed up the ui of the audio settings a little bit
Merge remote branch 'upstream/master' into pretty-micsettings

Conflicts:
	bigbluebutton-client/src/org/bigbluebutton/main/views/MicSettings.mxml
moved the Mic Warning strings to the locale file and fixed up a bug with the chrome warning popup
Merge pull request #304 from SenecaCDOT-BigBlueButton/pretty-micsettings

Pretty micsettings
Merged with  https://github.com/mconf/bigbluebutton/tree/webrtc_support
Merge master branch to add style in mic settings.
Fit webrtc buttons in audio settings window.