UIParameter support for MenuModel

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@10022 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Phase 2 of UIParameter support for MenuModel covering ajax and non-ajax requests. Phase I was GET requests.

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@10023 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c