:+1: to background process. Even if govdeliveryapi guarantees robustness, we should handle gracefully such that unexpected load/network traffic doesn't interrupt the publishing process and potentially leave corrupted data. At the moment if someone else added a module after [this entry](https://github.com/alphagov/whitehall/pull/405/files#L0R21), and the post timed out or had an error, any after publish hooks might not get run -- and that's assuming Rails runs them in the order defined.