mastodon/app/serializers
Eugen Rochko 412ea87306 Improve ActivityPub/OStatus compatibility ()
*Note: OStatus URIs are invalid for ActivityPub. But we have them for
as long as we want to keep old OStatus-sourced content and as long as
we remain OStatus-compatible.*

- In Announce handling, if object URI is not a URL, fallback to object URL
- Do not use specialized ThreadResolveWorker, rely on generalized handling
- When serializing notes, if parent's URI is not a URL, use parent's URL
..
activitypub Improve ActivityPub/OStatus compatibility ()
rest api/instances: Include the stats from the /about/more page ()
initial_state_serializer.rb Add protocol handler. Handle follow intents ()
oembed_serializer.rb Replace OEmbed and initial state Rabl templates with serializers ()