Add a hook to add mobile calendar resources automatically.

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@11032 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Use constant

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@11034 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c