Built-in ajax status for dataScroller

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@10352 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
LazyDataModel support for DataScroller

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@10353 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Cosmetics

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@10355 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c