Merge pull request #2070 from dingpinglv/Iss5781_ReleaseV3rc2

Fixed #5781: fixed a bug of cc.ClippingNode
Fixed #5798: UIText clone error
Merge pull request #2071 from VisualSJ/develop-rc2

Fixed #5798: UIText clone error
Fixed #2046: the param model miss "l".
Merge pull request #2072 from VisualSJ/develop-rc2

Fixed #2046: the param model miss "l".
Fixed #5781: update the Authors
Merge branch 'develop' of git://github.com/cocos2d/cocos2d-html5 into Iss5781_ReleaseV3rc2