Verification Link Within Healthcare Provider Email

[sierrastephens]

As a user, I want to verify the Healthcare provider's email address via a verification link within the Healthcare provider email.
Please note: this ticket is apart of #23, which covers the Healthcare Provider Email. This ticket will only cover the detail of the verification link needed to confirm ownership within the email.

Acceptance Criteria

• Send a verification link within the Healthcare Provider Email leveraging a unique identifier/code.
• Verification link within the Healthcare Provider Email is clickable
• Verification link redirects to blank page that says: "Thank you for verifying your email! " to confirm ownership
• Update nomination model: Email Validate parameter to True
• The generated one time verification link will only be valid for 7 days
• Ability to flag "public domain" email in the nomination model