* Add an Admin Certification Photo workflow where we can request the user to
upload a secondary form of ID (government issued photo ID showing their
face and date of birth).
* An admin rejection option can request secondary photo ID.
* It sends a distinct e-mail to the user apart from the regular rejection email
* It flags their cert photo as "Secondary Needed" forever: even if the user
removes their cert photo and starts from scratch, it will immediately request
secondary ID when uploading a new primary photo.
* Secondary photos are deleted from the server on both Approve and Reject by
the admin account, for user privacy.
* If approved, a Secondary Approved=true boolean is stored in the database. This
boolean is set to False if the user deletes their cert photo in the future.
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