closed #3727, In project "TestCpp", not pause/resume background music & effects when it's going to background/foreground.
[AUTO][ci skip] : updating tools/project-creator/module/cocos_files.json
Merge pull request #5481 from CocosRobot/update_cocosfiles_1393468152

[AUTO][ci skip] : updating tools/project-creator/module/cocos_files.json
return immediately when no changing
Merge pull request #5483 from minggo/node-optimize

return immediately when no changing
remove unneeded tools
Merge branch 'develop' of https://github.com/natural-law/cocos2d-x; branch 'develop' of https://github.com/cocos2d/cocos2d-x into develop
Merge pull request #5484 from minggo/remove-unneeded-files

remove unneeded tools
Merge pull request #5480 from natural-law/develop

Remove the music & effects controlling in AppDelegate.cpp of TestCpp