Merge pull request #2378 from dingpinglv/develop

Fixed a bug of cc.Director that its position is incorrect when calling setProjection
Issue #5983: fixed bug that uibutton readerer error
Merge pull request #2379 from VisualSJ/Renderer

Issue #5983: fixed bug that uibutton readerer error
Fixed a bug of TextureRenderCmdCanvas
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-html5 into develop