asm-helpful/helpful-web — pull request #39 by drewblas (2013-11-19 17:15:34+00:00)
Title: Add webhook storage

https://assemblymade.com/helpful/wips/107
https://assemblymade.com/helpful/wips/108

A Webhook record is created for each webhook sent out, which stores the
body and other info. For https://assemblymade.com/helpful/wips/108

The webhook is signed with a HMAC-SHA256 for verification. Per
https://assemblymade.com/helpful/wips/107

To be accomplished in future WIPs, this commit does not address:

* Viewing the webhook status
* Retrying webhooks