Fixed #4597: fixed the reference of _doLayout function in UILayout.js
Merge pull request #1728 from dingpinglv/Iss4597_DoLayout

Fixed #4597: fixed the reference of _doLayout function in UILayout.js
Closed #4571: Correct the DrawNode API inconsistence between H5 and JSB
Merge pull request #1730 from dingpinglv/Iss4571_DrawNodeAPI

Closed #4571: Correct the DrawNode API inconsistence between H5 and JSB
Issue #4589: Make actions extendable directly via ctor pack 2
Issue #4589: Make actions extendable directly via ctor pack 3
Fixed #4623: Make cc.textureCache.addImage API more logical
Merge branch 'develop-3.0' of git://github.com/cocos2d/cocos2d-html5 into develop-3.0
Issue #4589: Fix bugs