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`

Now that the request is signed, it can return private toots. Do not leak them.

Fixes #11127

* Make sure the poll is created before storing its id

* Fix updating poll results

* Support fetching Question activities from the search bar

* 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

Fix #6973

* Support fetching objects of convertible types by URL (fixes #6924)

* Ignore invalid hashtags

The service used to be named FetchRemoteResourceService resolves local
URL as well.

* Fix regression in FetchRemoteResourceService

* Update specs to match interface changes made in #5114

* Add support for searching AP users

* use JsonLdHelper

* Coverage for fetch remote resource service

* Refactor fetch remote resource service

* Coverage for search service

* Refactor search service

add ability to open status by URL from search (fix #53)

Returns accounts, statuses, hashtags arrays