Add MetroUI to the Showcase

git-svn-id: http://primefaces.googlecode.com/svn/showcase/trunk@11596 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Upgrade mojarra

git-svn-id: http://primefaces.googlecode.com/svn/showcase/trunk@11597 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c