Update Jcrop to version 0.9.12 (closes #34)

Still needs an upgrade step.
Merge remote-tracking branch 'origin/master' into Jcrop-0.9.12

Conflicts:
	CHANGES.txt
Merge pull request #42 from collective/Jcrop-0.9.12

Update Jcrop to version 0.9.12 (closes #34)