add fixed priority for CCScrollView
update submodule
Merge branch 'stl-cocos2dx-3.0' of github.com:ShortTailLab/cocos2d-js into fix-scroll-view
Merge branch 'stl-cocos2dx-3.0' of github.com:ShortTailLab/cocos2d-js into fix-scroll-view
Merge pull request #2 from ShortTailLab/fix-scroll-view

Fix scroll view