Only look up private toots from database if the request failed because of 401,
403 or 404 errors, as those may indicate a private toot, rather than something
that isn't a toot or cannot be processed.
* Remove “protocol” argument and return value, as only ActivityPub is supported
* Remove FetchRemoteAccountService, only use ActivityPub::FetchRemoteAccountService
* Fix tests
* Fix already-known remote private toots not being searchable by URL
Whenever an URL search fails, and an account is provided, try getting a
private status matching that URL from database.
* Fix searching by `id` field instead of `uri`
* Allow accessing local private/DM messages by URL
(Provided the user pasting the URL is authorized to see the toot, obviously)
* Fix SearchServiceSpec tests
* Add equals_or_includes_any? helper in JsonLdHelper
* Support arrays in JSON-LD type fields for actors/tags/objects.
* Spec for resolving accounts with extension types
* Style tweaks for codeclimate
