Implement fuzzy club member searches

Auctiontos features a filter to find people by rhyming names, which is used to find duplicates and make searching easier. Reusing as much code as possible (subclass or helper function) implement a similar system for club members. Also - make sure the SES complaint handler sets do not contact on club members with matching email, and the unsubscribe method in userdata also sets unsubscribed on any club members whose emails match. Update club history accordingly.