Merge pull request #319 from criedel/master

Fixes for Jcrop and Alert component
Thx !!!
reset clientid in setupRender (like in AbstractLink class
Merge branch 'master' of https://github.com/got5/tapestry5-jquery
Issue #320 with the carouselItem component, we can now display something else than an image
Merge branch 'master' of git://github.com/got5/tapestry5-jquery