Fix Bug: B65-ZK-1724: fileupload error contentId is required
minor update
fix ZK-1791 @global-command does not provide predefined "event" variable
Fix Bug B60-ZK-1784: client rod with hflex cause js error
replace variable name titleAndPaddingColor with headerAndPaddingColor
use this.$s() in domClass_()
rename variable
ch icon-img backgroundColor and set display: block
extract variable
rm ie6 statement
fine tuning
Merge remote-tracking branch 'Noah/update-window' into 7.0
fix zk 1787 notify change with tempalte
Merge branch 'zkoss/master'

Conflicts:
	zkdoc/release-note
fix bug B65-ZK-1785 : Tabbox (accordion) : selecting and removing a tab results in wrong node being opened
add component height
@baseHeight:            8px;
@baseIconHeight:   @baseHeight * 2; // 16px
@baseButtonHeight: @baseHeight * 3; // 24px
@baseBarHeight:    @baseHeight * 4; // 32px
@baseTitleHeight:  @baseHeight * 5; // 40px
add
// component width
@baseWidth:            8px;
@baseIconWidth:   @baseWidth * 2; // 16px
@baseButtonWidth: @baseWidth * 3; // 24px
Merge branch '7.0' of github.com:zkoss/zk into 7.0
1. update Calendar.js for CSS3
2. add .resetGradient() for less
Merge branch '7.0' of github.com:zkoss/zk into 7.0