fixed 'slider will zoom to the bottom right side instead of center'
 - mute late user if meeting is muted
 - when user joins voice, see if the meeting is muted and mute user if it is
 - when presenter receives page coordinates from server when dragging the slide, ignore the message
   so as not to reposition the page and creating a jerky page movement
 - show presentation conversion progress
Merge remote-tracking branch 'origin/master' into zoom-slider-bug
Merge pull request #364 from SenecaCDOT-BigBlueButton/zoom-slider-bug

fixed 'slider will zoom to the bottom right side instead of center'
bbb-cond now ignores if redis.pass is blank in bigbluebutton.properties
Tweaking the language for the Audio Test dialog
Minor tweak to the webRTC notification (lower right-hand corner)
the raise hand button is now visible for all users
Merge remote-tracking branch 'upstream/master' into enable-raisehand-for-all
'?' button on the WebRTC Audio Connection dialog will open default help page
Merge pull request #367 from SenecaCDOT-BigBlueButton/webrtc-connection-window-questionmark-button

'?' button on the WebRTC Audio Connection dialog will open default help ...
Update start/stop logic for BigBlueButton to also stop monit (thanks Calvin)
Improved chat URL regex to match more urls
Correctly stop libreoffice when doing sudo bbb-conf --clean
Merge pull request #368 from speakserve/better-chat-url-regex

Improved chat URL regex to match more urls
 - add new param (moderatorOnlyMessage) on CREATE API
Merge branch 'add-mod-only-welcom-message'