add '${arg.sclass}' placeholder to messagebox.zul
update Javadoc comment of Messagebox.java
Bug fixed Sandbox portallayout case: the max, min and collapse button should work in tablet
Merge branch '6.5' of https://github.com/zkoss/zk into fix-65
add case
fix zktest borderlayout case: change from set flex="true" in layout comp to set vflex="1" in layout's child comp
Change tree's check icon to image in IE8
Bug fixed B70-ZK-2070: grid onScroll client-side event not working in 7.0 http://tracker.zkoss.org/browse/ZK-2070
Bug fixed ZK-2084: Doublespinner should display float value
http://tracker.zkoss.org/browse/ZK-2084
Merge branch 'add-sclass-to-messagebox' of https://github.com/yuki-takei/zk
Feature F70-ZK-2087: Add sclass to messagebox
http://tracker.zkoss.org/browse/ZK-2087
Merge remote-tracking branch 'Noah/B70-ZK-2084'
Bug fixed ZK-2080: Chosenbox with ListSubModel not working if using template to render data
http://tracker.zkoss.org/browse/ZK-2080

Bug refixed ZK-2019
Merge remote-tracking branch 'upstream/6.5'
Bug fixed B70-ZK-2088: zk.safari show version number on Chrome http://tracker.zkoss.org/browse/ZK-2088
zk2083 testcase
Feature F70-ZK-2085: Slider support minimal position and decimal mode
http://tracker.zkoss.org/browse/ZK-2085
Bug fixed B65-ZK-2091: Copy-paste large value in doublebox get error.
http://tracker.zkoss.org/browse/ZK-2091
Merge remote-tracking branch 'upstream/6.5'
Minor fix F70-ZK-2085