Refix Bug B65-ZK-2210: improve zk portlet 2 integration
http://tracker.zkoss.org/browse/ZK-2210
Bug ZK-1799: Panel or Window width is too small when content is small and title is big
Merge remote-tracking branch 'upstream/6.5'
Bug ZK-2236: client side Widget.hide() does not recalculate flex (while Widget.hide() does)
Bug fixed ZK-2217: listfoot and paging disappears when loading data
http://tracker.zkoss.org/browse/ZK-2217
Bug ZK-2215: Fileupload.get() doesn't implement the accept attribute
Merge remote-tracking branch 'Noah/B70-ZK-2217'