Closed #2795: Fix a bug of cc.Node that nodeToWorldTransform returns wrong value on Canvas Mode and refactor menu_nodes's codes for performance.
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-html5 into Iss2795_FixNodeToWorldTransform
Merge pull request #1120 from dingpinglv/Iss2795_FixNodeToWorldTransform

Closed #2795: Fixed a bug of cc.Node that nodeToWorldTransform returns wrong value on Canvas Mode and refactor menu_nodes's codes for performance.