Improves $.rte.updateOverlay to be more efficient.
Conflicts:
	tool-ui/src/main/webapp/script/jquery.rte.js
Changes $.rte to only trigger change event on the underlying textarea when blurred instead of triggering input on every keystroke since that's too expensive.
Fixes saving a new draft not setting the correct publish date.
Fixes selecting an enhancement not updating the preview image.
Merge branch 'release/2.1'

Conflicts:
	tool-ui/src/main/webapp/script/jquery.rte.js