Issue #5968: remove a condition from TextureRenderCmd
Merge branch 'Renderer' of https://github.com/cocos2d/cocos2d-html5 into Iss5968_RefactorCanvasRenderer
Fixed some typo.
Issue #5968: refactor load event of texture, sprite frame and sprite etc
Merge branch 'Renderer' of https://github.com/cocos2d/cocos2d-html5 into Iss5968_RefactorCanvasRenderer
Merge pull request #2348 from dingpinglv/Iss5968_RefactorCanvasRenderer

Issue #5968: refactor load event of texture, sprite frame and sprite etc