Fixed filter sync issues

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@11625 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
refactor

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@11626 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Better fix for #7117

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@11627 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
bugfix

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@11628 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c