Big change set...
- Added new fields in control panel to setup chimpdrill templates for recurring related emails
- Started implementation of handling recurly webhooks for recurring donations
- Split out vocabularies
- Removed all references to Authorize.net and Recurly.  The system is now exclusively designed to work with Stripe
- Removed all implementations of directly sending email where a chimpdrill template can be configured
- Reworked salesforce sync
- Changed donation receipt to an adapter which no longer requires request
- Moved donation receipt sending to an asynchronous process
- Changed to a two step process for handling donations to avoid errors caused by token reuse when a write conflict occurs and the request is retried