Delete User Updates

[ihsaan-ullah]

@ mention of reviewers

@Didayolo

A brief description of the purpose of the changes contained in this PR.

Delete user flow is updated:

• Add the username and email in a new table DeletedUser when a user requests deletion of his acocunt
• During Sign up, check that the email entered is not in DeletedUser otherwise show an error

• Django admin shows the deleted users

• A function runs every 24 hours and deletes records from DeletedUser that are more than 30 days old

Checklist

• Code review by me
• Hand tested by me
• I'm proud of my work
• Code review by reviewer
• Hand tested by reviewer
• CircleCi tests are passing
• Ready to merge

[Didayolo]

Thank you for your efficiency! I'll review it as soon as possible

[Didayolo]

@ihsaan-ullah I am not able to delete an account locally. Do we need to test this on the test server?

accounts/delete/Ng/6sg-23ec25e10a3814d20b9a">http://example.com/accounts/delete/Ng/6sg-23ec25e10a3814d20b9

I get this error even when I replace example.com by localhost on the deletion link.

[ihsaan-ullah]

Deletion was working on my side locally. I had to fetch the deletion link from django logs like accounts/delete/Ng/6sg-23ec25e10a3814d20b9a

What is the error you are getting?

[Didayolo]

For some reason, now that I tried again, it worked!

[Didayolo]

OK, I tested and it is working fine. I cheated on the time delta to be able to test the removal without waiting 30 days.