Use Atmosphere 2.1.0

git-svn-id: http://primefaces.googlecode.com/svn/examples/trunk/showcase@10628 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Rework the Chat - work in progress

git-svn-id: http://primefaces.googlecode.com/svn/examples/trunk/showcase@10631 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Inject the EventBus when the connection is openned

git-svn-id: http://primefaces.googlecode.com/svn/examples/trunk/showcase@10632 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c