* Enable new Rails/* cops and use autocorrect on them
* Fixed Rails/PluckInWhere leftovers
* Fix Rails/DefaultScope
* Enable and fix Rails/PluckId
* Fix manual mistake with forcing autocorrection on Rails/PluckId
* Apply PR feedback to remove Rails/PluckId inline disables
* Apply PR feedback to get rid of Rails/PluckInWhere inline
* Fix webhook API and add POST /api/webhooks docs
* Document GET /api/webhooks/:id
* Fix DELETE /api/webhooks/{id} and document it
* Add proper 404 specs
