first commit for 2375
add zul test file for ZK-2285
Bug ZK-2371: Validation message is not shown every time. It depends on the height of the browser window.

Note: fixed after merged "refix ZK-2294"

@commit: cd9219212d2a49e1dccc3aa742538e36d3479efc
Merge pull request #97 from hanhsu/B70-ZK-2371

Bug ZK-2371: Validation message is not shown every time. It depends on t...
Bug ZK-2379: selectbox with model error when calling parent invalidate()
Merge branch '6.5' of github.com:zkoss/zk into 6.5
Merge remote-tracking branch 'upstream/6.5'
refix B65-ZK-2379 for ZK Bind issue
Merge remote-tracking branch 'upstream/6.5'
Fine tune for B65-ZK-2379
Merge remote-tracking branch 'upstream/6.5'
Bug ZK-2375: Close treenode did not render tree correctly in paging mold
Merge branch 'B70-ZK-2375' of https://github.com/hanhsu/zk
fix Bug ZK-2375: Close treenode did not render tree correctly in paging mold
Merge pull request #101 from hanhsu/fix-B70-ZK-2375

fix Bug ZK-2375: Close treenode did not render tree correctly in paging ...
Bug ZK-2382: Can't select specific date when daylight saving time started at 12:00:00 AM
Merge pull request #102 from jerrywell/master

Bug ZK-2382: Can't select specific date when daylight saving time starte...
Due to the coupled component hierarchy issue, we deprecated the attribute stubonly of Row, Listitem, and Treeitem,
  please use Cell, Listcell, and Treecell instead.
Bug ZK-2390: hflex fails when combining hbox and templating
Bug ZK-2389: Append popup component to Hlayout throws JavaScript error