Merge pull request #1561 from pandamicro/develop-3.0

Refactor #3922: Complete refactor of cc.Sprite properties getter/setter
Refactor #4028: cc.Sprite extended properties getter/setter defined
Refactor #4028: cc.LabelAtlas & cc.LabelBMFont extended properties getter/setter defined
Refactor #4028: Refactor cc.LabelTTF, cc.LabelBMFont, cc.LabelAtlas extended getter/setter in engine
Refactor #4028: Fix a bug, quadsToDraw in cc.LabelAtlas hasn't been updated to public reference
Feature #3940: Delete compiled file
Merge branch 'gettersetter' into develop-3.0

* gettersetter:
  Feature #3940: Delete compiled file
  Refactor #4028: Fix a bug, quadsToDraw in cc.LabelAtlas hasn't been updated to public reference
  Refactor #4028: Refactor cc.LabelTTF, cc.LabelBMFont, cc.LabelAtlas extended getter/setter in engine
  Refactor #4028: cc.LabelAtlas & cc.LabelBMFont extended properties getter/setter defined
  Refactor #4028: cc.Sprite extended properties getter/setter defined
Merge branch 'develop-3.0' of https://github.com/cocos2d/cocos2d-html5 into develop-3.0

# Via dingpinglv
* 'develop-3.0' of https://github.com/cocos2d/cocos2d-html5:
Refactor #4028: Replace cc.p with cc._pConst in LabelTTF to resolve bug of text shadow
Merge branch 'gettersetter' into develop-3.0

* gettersetter:
  Refactor #4028: Replace cc.p with cc._pConst in LabelTTF to resolve bug of text shadow