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
Add file format hint message
Disable file list when file upload process running
Merge pull request #304 from SenecaCDOT-BigBlueButton/pretty-micsettings

Pretty micsettings
 - wire app voice conference service
 - fix message handling issue
 - update locales to show java7u51
 - breakdonw presentation messages into spearate messages
 - try to get presentation working again
 - try to fix presentation messages
Merged with  https://github.com/mconf/bigbluebutton/tree/webrtc_support
 - fix presentation conversion message
 - handle get presentation info message
 - try to figure out logging
 - send presentation messages as JSON
 - slowly making presentation work again
 - fix go to slide message
 - fix issue where in goto page, the previous page is still marked as current page
 - continue fixing presentation. Looks like it synchs. Need to fix why
   current page of presentation doesn't display for late comer.