refactor behavior of verificationStatus and admin role

[grindarius]

currently the status and the role is not really associated.

I wanted to refactor this part by making the following changes:

• If a person has been promoted to an admin, the status on the frontend side will only show the admin badge. You are guaranteed you will be automatically verified if you get promoted by other admins to be an admin.
• When a person is an admin and then get depromoted back to a user, the person can keep their verified role.
• When a person gets promoted to a verified account, nothing is done on the admin side.
• When a person gets depromoted to a normal user, nothing is done.