Ensure user who unsubscribed directly from email is marked unsubscribed in database

[mortengf]

Create two exports in MailChimp of subscribed and unsubscribed users who are also members of "Members - Free" and compare with the database, e.g. compare the latter type in MC with subscribed users in the DB.

Numbers from October 19th 2015:

1. "Members - Free" in MC ~ 87
2. Unsubscribed from newsletter: ~21 (includes ~6 unsubscribed in DB)
3. Subscribed in DB: ~147

1. • 2. should add up to 3) but doesn't.