Expose FilterMeta

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@11723 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
refactor

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@11724 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Fixed #7294

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@11725 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c