add '${arg.sclass}' placeholder to messagebox.zul
update Javadoc comment of Messagebox.java
Feature F65-ZK-2061: Security Issue: Version number inserted on each page
http://tracker.zkoss.org/browse/ZK-2061
Minor fix the calculation of minimal width in IE11
Bug fixed B65-ZK-2026: Datebox always displays the current year when blurred if format = "MM.yyyy"
http://tracker.zkoss.org/browse/ZK-2026
Bug fixed 1916287: the column should align correct in ie11
Bug fixed 2909817: the second column should align correct in ie8,9,10,11
Bug refixed ZK-398, ZK-272, ZK-242: if no items, in opera, ie > 8 it will appear a scrollbar
Bug fixed B65-ZK-1880: The images of the menu are cut in zksandbox window case http://tracker.zkoss.org/browse/ZK-1880
Bug refixed ZK-1037: A empty listbox with long header will appear scroll bar (IE > 10)
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
Bug fixed ZK-1892: Error when calling setCoords() in Area widget
http://tracker.zkoss.org/browse/ZK-1892
Feature ZK-2075: provide the possibility to display or log missing labels
fine tune
B65-ZK-1954: Vertical scroll appear when remove last listitem from Listbox http://tracker.zkoss.org/browse/ZK-1954