mastodon/app/controllers/activitypub
ThibG 53071389ee Fix multiple issues with replies collection for pages further than self-replies ()
* Fix the replies collection returning snowflakes ids rather than URIs

Fixes 

* Fix min_id in replies queries once self-replies are exhausted

* Fix `next` attribute of replies collection being nil when there are no self-replies

* Rename other_accounts param to only_other_accounts
..
base_controller.rb Add whitelist mode ()
collections_controller.rb Add (back) rails-level JSON caching ()
inboxes_controller.rb Add whitelist mode ()
outboxes_controller.rb Fix caching headers in ActivityPub endpoints ()
replies_controller.rb Fix multiple issues with replies collection for pages further than self-replies ()