Week5 （Aug 5-Aug 13）

Weekly summary：

1. Add a PolicyList for policy edit. From the webUI, users can add their policy and use Xrom to save the policy in the local datebase.
2. Fix some bug in Edit page.
3. Add footer and repository link in the home page.
4. Improve some css.

Next week：

1. Studied the casbin policy and PML-EM rules for vertifing.
2. Store the user information and add a registration interface.