#5778 for DND

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@9501 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
#5778 for Menu

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@9502 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
#5778 for Slider

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@9503 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
#5778 removed null checks in components

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@9504 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c