issue #2506: use direct call parent's function instead this._super for extensions
fixed #2506: Optimize performance for ContolButton, ScrollView and TableView etc
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-html5 into Iss2506_OptimizePerformanceForExtension
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-html5 into Iss2506_OptimizePerformanceForExtension
fixed #2723: Function prototype have not method of bind in iphone safari.
fixed #2723: Append a div child to body bottom,and tag to it.
fixed #2723: Hide url address bar for mobile browser,it can work in iphone safari and android default browser .
Merge pull request #1099 from xingsenma/Branch_develop_AddressBar

fixed #2723: Hide url address bar for mobile browser
fixed #2725: Implement unloadPlist function of cc.SAXParser
issue #1088: add onResLoadingErr for preload file
Merge pull request #1100 from xingsenma/develop_unloadPlist

fixed #2725: Implement unloadPlist function of cc.SAXParser
Merge pull request #1098 from dingpinglv/Iss2506_OptimizePerformanceForExtension

fixed #2506: Optimize performance for ContolButton, ScrollView and TableView etc
Merge pull request #1101 from xingsenma/develop_onResLoadingErr

issue #1088: add onResLoadingErr for preload file
closed #2741: Modify LabelTTF's rendering from direct draw to pre-render
Closed 2741: Solved the problem that LabelTTF didn't work on mobile browser.
Closed #2741: remove the debug codes.
Closed #2741: fixed a bug of SpriteCanvas that loading texture doesn't work when calling initWithFile
Merge pull request #1102 from dingpinglv/Iss2741_RefactorLabelTTFDraw

closed #2741: Modify LabelTTF's rendering from direct draw to pre-render
fixed #2754: Fixed the bug that _getResType error when the url of res is like "a.png?arg=value".
fixed #2760 : removeEventListener bug