Keep track of user payments

[ddeanto]

We can keep track of all user payments if we do these 2 things:

1. save each one time donation immediately to our db when they are created,
2. create a webhook that is sent to our server each time a subscription is charged, parse the webhook, and save it to our database

[ddeanto]

finished part 1

[ddeanto]

I finished part 2 - I am closing for now, everyting appears to be working but I won't fully know until we are in production and getting real webhooks