ZK-315: DHtmlLayoutPortlet support Portlet 2.0
http://tracker.zkoss.org/browse/ZK-315
fine tune ZK-315
fine tune
Fix bug ZK-1622: Paging listbox scrollbar is wrong
http://tracker.zkoss.org/browse/ZK-1622
B65-ZK-1076: North hides when i refresh databind
Merge remote-tracking branch 'VincentJian/F65-ZK-315'
Merge branch '6.0'