Implemented Dialog widget for PrimeFaces Mobile

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@10651 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Fixed invalid markup

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@10653 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c