revert commit - code freeze for 5.1

git-svn-id: https://primefaces.googlecode.com/svn/primefaces/trunk@11843 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Fixed treetable events

git-svn-id: https://primefaces.googlecode.com/svn/primefaces/trunk@11845 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Fixed dynamic columns sorting problem

git-svn-id: https://primefaces.googlecode.com/svn/primefaces/trunk@11847 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Dropped support for static sortBy values in multisort.

git-svn-id: https://primefaces.googlecode.com/svn/primefaces/trunk@11848 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
bugfix

git-svn-id: https://primefaces.googlecode.com/svn/primefaces/trunk@11850 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Fixed checkbox tree selection issue

git-svn-id: https://primefaces.googlecode.com/svn/primefaces/trunk@11851 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Refactor

git-svn-id: https://primefaces.googlecode.com/svn/primefaces/trunk@11853 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Set expanded as false on collapse

git-svn-id: https://primefaces.googlecode.com/svn/primefaces/trunk@11854 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Fixed #7453

git-svn-id: https://primefaces.googlecode.com/svn/primefaces/trunk@11855 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c