Add User and Group for set permissions

[congweibai]

Hi Ben,

As currently users and groups are mixed, I would like to tell difference between them. My solution is to push a disabled option before these two types. Hope this makes sense to you.

Thanks and have a nice day! Wyatt

[benwinding]

Thanks @congweibai nice solution!

The only thing I would recommend is reducing formatting changes in future Pull Requests, as it makes it harder to review and see actual changes, but it otherwise looks great!

Will merge it in now 👍

[congweibai]

Thanks @benwinding, will take care of it in the future.