Fixed ajax page event for DataGrid

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@9149 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
Reverted datalist changes

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@9150 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c