refactor

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@11950 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Added setType method to TreeNode interface

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@11951 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Implemented sorting for mobile datatable

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@11952 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c