Merge pull request #2407 from dingpinglv/SpriteWithoutTexture

Correct a mistake of cc.Sprite that its rendering is incorrect without texture
Fixed #2408: Fixed a bug of cc.ClippineNode
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-html5 into SpriteWithoutTexture
Merge pull request #2409 from dingpinglv/Iss2408_ClippingNode

Fixed #2408: Fixed a bug of cc.ClippineNode
Closed #2401: Read out the textfield for the first time
Merge pull request #2411 from VisualSJ/develop-fix

Closed #2401: Read out the textfield for the first time
Add getSprite() method for compatible with cocos2d-x

Cocos2d-x's CCScale9Sprite is have getSprite() method for getting
scale9Image field but cocos2d-html5 is not. Need to be fixed for
compatibility.
Merge pull request #2412 from IgorMats/develop

Add getSprite() method for compatible with cocos2d-x
Add getSprite() method for compatible with cocos2d-x
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-html5 into SpriteWithoutTexture