Factored out mail management code into mailman.rb
Fixed tabs/spaces issue in last commit
Forgot to save contact preferences settings to the database
Better separation.
Code looks clean, but rake spec still doesn't pass

Issues:
- Confirmation token invalid in user_confirmation_spec
- Capybara::ElementNotFound "user_password_confirmation" in password_reset_spec
Merge pull request #99 from tmcyf/mailman

Factor out mail management code