Bug fixed B65-ZK-1728: Invisible Comboitems are selectable with cursor
keys  http://tracker.zkoss.org/browse/ZK-1728
add case
Merge branch 'B65-ZK-1728' of git://github.com/huangnoah/zk
Fix F55-ZK-314
fix comment
Bug fixed B65-ZK-1706: hflex does not work properly inside a Toolbar
component  http://tracker.zkoss.org/browse/ZK-1706
Fix bug ZK-1732: Setting visible to true to a listbox, which is inside a hlayout, do not work after zk6.5.2
http://tracker.zkoss.org/browse/ZK-1732
Merge branch 'B65-ZK-1706' of git://github.com/huangnoah/zk
Merge remote-tracking branch 'VincentJian/B65-ZK-1732'