* Change authorized applications page

* Hide revoke button for superapps and suspended accounts

* Clean up db/schema.rb

Remove locks from scheduled jobs

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

* Add scheduled worker to purge old user IPs

* Use ruby 1.9 hash syntax