Closed #2852: Re-write EGLView and multiple resource adapting to optimize performance for mobile browser
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-html5 into Iss2852_RefactorMultResources
Closed #2852: clean up some test codes in HelloHTML5World.
Merge pull request #1173 from dingpinglv/Iss2852_RefactorMultResources

Closed #2852: Re-write EGLView and multiple resource adapting to optimize performance for mobile browser