Better fix for #4170

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@9627 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Reimplemented AjaxStatus as a native widget instead of using built-in jQuery callbacks due to limitations and limit of customization.

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@9628 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c