Merge pull request #1 from danchen0720/F70-ZK-2049

Feature F70-ZK-2049:menupopup support toggle type  http://tracker.zkoss....
Bug fixed B70-ZK-2053: Listgroup checkmark wrong display
http://tracker.zkoss.org/browse/ZK-2053
Merge pull request #4 from danchen0720/B70-ZK-2053

B70 zk 2053
Merge remote-tracking branch 'origin/master'

Conflicts:
	zkdoc/release-note
Bug fixed B70-ZK-2053: Listgroup checkmark wrong display
http://tracker.zkoss.org/browse/ZK-2053
Merge branch 'pr/5'
Merge remote-tracking branch 'RaymondChao/B70-ZK-2053'
Bug fixed B70-ZK-2004: The selected Objects of the Chosenbox is incorrect after replace model
http://tracker.zkoss.org/browse/ZK-2004
Update some test cases
Bug fixed B65-ZK-2004: The selected Objects of the Chosenbox is
incorrect after replace model
http://tracker.zkoss.org/browse/ZK-2004
ZK-2055: the page stop running when listitem or row bind with object
Merge branch 'zkoss/6.5-Stable'

Conflicts:
	zkbind/src/org/zkoss/bind/tracker/impl/BindUiLifeCycle.java
Bug fixed ZK-2038: Grid is missing the bottom border for certain layout in IE9~11
http://tracker.zkoss.org/browse/ZK-2038
Merge branch '6.5' of github.com:zkoss/zk into 6.5
Merge remote-tracking branch 'upstream/6.5'
Merge remote-tracking branch 'RaymondChao/B70-ZK-2004'
Merge remote-tracking branch 'Noah/B70-ZK-2038'
Bug fixed ZK-2024: combobox bound selectedItem not updated on blur event
http://tracker.zkoss.org/browse/ZK-2024

the value of combobox should have same case with selected label if autocomplete is enabled
Bug fixed ZK-1552: Combobox and Datebox scroll position in Borderlayout
http://tracker.zkoss.org/browse/ZK-1552
Bug fixed B65-ZK-2035: Invalidate a Panel component with a button will cause a js error http://tracker.zkoss.org/browse/ZK-2035