Add subscription importing; drop bad accounts
Add a rake task to dump email addresses for manual mailing
More autoscheduler work in progress

- autoscheduling can unselect existing screenings
- subscriptions can skip autoscheduling on save
- add a subscription unselect pseudo-attribute passed through to autoscheduler
- start accumulated needed data structures
Initial work on Cost
Tweak some header font sizes & a date format
Importer: import subscriptions & picks to the fake 2013 festival too
Add capistrano & unicorn gems
Start working on deployment: initial Capfile, etc.