common app used as write public api or templatetags modify user list view and user edit view
Modify user list view Modify user add view
It's may be well
详细描述了设计原则和遵守风格, 还不够完善，会随着开发进程逐渐完善它
添加api风格约定, python风格添加了详细说明，更改project的骨架说明
