Also:
- Fix locks not being removed when jobs go to the dead job queue
- Add UI for managing locks to the Sidekiq dashboard
- Remove unused Sidekiq workers
Fix#13349
* No need to re-require sidekiq plugins, they are required via Gemfile
* Add derailed_benchmarks tool, no need to require TTY gems in Gemfile
* Replace ruby-oembed with FetchOEmbedService
Reduce startup by 45382 allocated objects
* Remove preloaded JSON-LD in favour of caching HTTP responses
Reduce boot RAM by about 6 MiB
* Fix tests
* Fix test suite by stubbing out JSON-LD contexts
* Adjust privacy policy to be more specific to Mastodon
Fix#6613
* Change data retention of IP addresses from 5 years to 1 year
* Add even more information
* Remove all (now invalid) translations of the privacy policy
* Add information about archive takeout, remove pointless consent section
* Emphasis on DM privacy
* Improve wording
* Add line about data use for moderation purposes
