AdaHeads/call-flow-control — pull request #153 by sparre (2014-04-29 08:58:31+00:00)
Title: Handlers.Call.Hangup: Adjusting implementation to match specification

- Checks if the requesting user is assigned to the call and returns `Forbidden` if it isn't the case.
- Introduces `Response.Templates.Forbidden` (was missing).
- `Model.Call.Assigned_To` now returns a `User_Identifier`.