Add spritesheet demo and a menu for all turorials

The fifth demo for spritesheet and a menu point to all the five demos
missing changes in cocos2d.js

Include added .js for all the project
Merge branch 'master' of https://github.com/JohnCookie/JohnCookie_cocos2d-html5_test

Conflicts:
	Cocos2d-html5-v2.1.1/MyFirstApp/MyFifthApp.js
	Cocos2d-html5-v2.1.1/MyFirstApp/cocos2d.js
	Cocos2d-html5-v2.1.1/MyFirstApp/main.js
Resolve errors when commit to Github

Some conflict happened when commit...