#6447

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@10371 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Initiated sorting feature for TreeTable

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@10372 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c