Display in admin area if emails are verified or not

Problem to solve

Currently, it isn't possible through the admin area to view whether or not a users primary or secondary email is verified. In order to check, the administrator will need to impersonate that user.

Further details

In supporting the users of an installation of GitLab, the ability to have this information available at a glance saves time.

In the case of GitLab.com, this allows support agents to more quickly solve tickets regarding customers being unable to sign up for an account due to an email address being taken as a secondary on another account.

Proposal

When viewing a user in the admin area, add an indication to the primary and secondary email fields indicating whether they're verified or unverified.

Going from this:

To the same but ideally with one of the following indicators added to each email field.