Questions
====================

1. Should admin be able to see subscriptions?

2. Should user be able to upgrade or downgrade subscriptions?

3. Should confirmations emails be allowed?

See here:
https://articles.braintreepayments.com/guides/recurring-billing/email-notifications
https://articles.braintreepayments.com/control-panel/transactions/email-receipts

4. Braintree uses JS for dropin. I'm not sure but this may not work in browsers
such as Tor. Is there a problem?
JS can be improved and changed to 'Hosted Fields'. See here:
https://developers.braintreepayments.com/javascript+ruby/guides/hosted-fields/overview

5. There is another payment method that can be allowed: SEPA Direct Debit (on
   beta). Should it be allowed?