消息处理器
Merge branch 'benz' of https://github.com/ZJU-ISST/ISST-Android into benz
添加基类BaseActivity用于模拟登录和消息处理
Merge branch 'master' of https://github.com/ZJU-ISST/ISST-Android

Conflicts:
	src/cn/edu/zju/isst/ui/life/NewsListFragment.java