利用fullpage.js 重构aboutus页面，增加并修改部分图片
忘记将修改复制到jsp文件，补充
添加css过渡效果，加入首页链接
Merge branch 'master' of https://github.com/JavaEEBoy/JNUSocialNetwork

Conflicts:
	JNUSocialNetwork/WebContent/pages/aboutUs.jsp
Merge branch 'scottDev'
修改section跳转时slide的显示漏洞
Merge branch 'master' of https://github.com/JavaEEBoy/JNUSocialNetwork

Conflicts:
	JNUSocialNetwork/WebContent/pages/aboutUs.jsp