- try to fix scaling problem with deskshare
 - scale captured image properly
 - use quality scaling always
 - try to position mouse pointer
 - remote mouse tracking in screen capture...do not want to embed mouse cursor into image as it will trigger lots of block updates
 - capture smaller than scale works now on mouse location
 - calculate  mouse x for fit-to-width
 - calculate mouse y for fit-to-width
 - can't seem to sync mouse for fit-to-height
 - fix fit-to-height mouse loc
 - try to sync mouse
 - sync mouse location
 - sync mouse loc - TODO: when both sides of captured region is bigger than scale
Merge branch 'deskshare-aspect-calculated' of github.com:bigbluebutton/bigbluebutton into deskshare-aspect-calculated
 - scale to maintain aspect ratio when cature sides are greater than scale
Merge branch 'deskshare-aspect-calculated' of github.com:bigbluebutton/bigbluebutton into deskshare-aspect-calculated
 - sync mouse location for case where capture is greater than scale
 - put star sharing button in middle
 - pre-calculate video stream size
 - scale fullscreen to fit into requested scale