fix noborder style
Merge branch '7.0' of https://github.com/zkoss/zk into update-panel
adjust offsetHeight(), and popup style
adjust move-ghost style
Merge branch '7.0' of https://github.com/zkoss/zk into update-panel
replace zcls + '-xxx' with this.$s('xxx')
replace zcls + '-xxx' with this.$s('xxx')
* rm !important and > selector in less
* adjust toolbar style when it is in diff position
Merge branch 'update-panel' of git://github.com/huangnoah/zk into 7.0
fine tune borderlayout scrollbar issue
extract less variables