work in progress
merge with upstream
implement realtime tab
correct a comment
Merge remote-tracking branch 'upstream/master' into spostman_realtime
register a cancelOverlay handler
reflect the comments
correct a lint error
Merge remote-tracking branch 'upstream/master' into spostman_realtime
reflect the comments
implement start/pause clear buttons in realtime
merge with the most recent one
Compacting overlays. Fixing overlay initiazlization.
change button size
Merge remote-tracking branch 'upstream/master' into spostman_realtime
merge with pull request #67
reflect the comments
correct lint errors
Merge pull request #68 from spostman/spostman_realtime

Implement the realtime tab.
Merge branch 'master' into overlay

Conflicts:
	main.html