Deleting denied local_users older than a week. Fixes #4434

[dessalines]

No description provided.

[Nutomic]

I think you also need to explicitly delete from person table. Maybe add a test case to create user, delete with this function and then create new user with same name.

[dullbananas]

Deleting the person should automaticaly delete the local user, so this could be done to have only 1 statement:

let users = person::table
    .filter(exists(local_user::table
        .filter(local_user::id.eq_any(old_denied_registrations))
        .filter(not(local_user::accepted_application))
    ));

[dessalines]

Oops good call. I'll do that now.

[dessalines]

Pushed up changes. I don't think you can use exists(... on another table when it doesn't know what columns to check, so I used person::id.eq_any

[Nutomic]

Looks good, will give @dullbananas a chance to review before merging.

[dullbananas]

Looks good to me