Json support

git-svn-id: http://primefaces.googlecode.com/svn/prime-ui/trunk@9163 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Sample update

git-svn-id: http://primefaces.googlecode.com/svn/prime-ui/trunk@9164 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c