Changes the admin change email for user flow so the user is sent an email to confirm the change
We now record who the email change request was requested by
If the requested by user is admin and not the user we note this in the email sent to the user
We also make the confirm change email route open to anonymous users, so it can be clicked by the user even if they do not have access to their account. If there is a logged in user we make sure the confirmation matches the current user.
Hopefully this makes the process make a lot more sense!