improve identity deletion

[alphatownsman]

• disable all current login tokens
• ignore new mention
• ignore new follow
• delete all data
• fanout delete posts, interactions
• fanout unfollow both directions
• fanout nullified identity, then fanout delete identity
• keep nullified identity for 7 days then delete forever

[andrewgodwin]

This says "including logins" but it does not seem to (and I would not want it to as that's on the User level) - is this an outdated comment?

[alphatownsman]

yes, outdated. just fixed.

[andrewgodwin]

Great - get the lint failures passing (just run pip install pre-commit; pre-commit run -a locally if you've not installed the hooks yet) and I think we can merge this in.

[alphatownsman]

done.

[andrewgodwin]

Thanks!