Conflicts:
	bigbluebutton-web/src/groovy/org/bigbluebutton/api/RecordingServiceHelperImp.groovy
	bigbluebutton-web/src/java/org/bigbluebutton/api/MeetingService.java

The parameter custom_mode=[simple|extended] overrides the mode set by default in lti.properties

Recording updates merge

With the switch to a different clock source in red5, the timestamps
in the events file are no longer real-time, but are rather in
seconds since computer boot.

The timestamp in the meeting id is still realtime, so use that as
the start time. Calculate the end time by adding the meeting length
to the start time.

Remove shell scrollbars and improved mdiCanvas height binding

MainApplicationShell mdiCanvas height binded to the application height instead of its parent heignt.

Changes to the LTI componet

Added message to let administration know that monit will restart bbb-record-core and LibreOffice.  Tweaked the language for audio settings dialog.

Changes to the LTI componet

Makes it handle possibly corrupted video files with less chance of
breakage. Use features from newer ffmpeg release to simplify the video
trimming - in particular, using -ss as an input option is accurate now.

MainCanvas height binded to its parent to avoid using percentHeight.