drop Jcrop - now managed with bower in core
Merge pull request #137 from owncloud/drop-jcrop

drop Jcrop - now managed with bower in core
drop zxcvbn - now in core via bower
Merge pull request #140 from owncloud/drop-zxcvbn

drop zxcvbn - now in core via bower
drop md5 - now in core via bower