Bug fixed B65-ZK-1880: The images of the menu are cut in zksandbox window case http://tracker.zkoss.org/browse/ZK-1880
Merge remote-tracking branch 'Dan0720/B65-ZK-1880'
Minor fix window onVParent
add commons-lang.jar
fix zul
Bug refixed ZK-1037: A empty listbox with long header will appear scroll bar in ie11
Bug fixed Sandbox splitter case: the width of vertical spliiter should be same as parent width