* Move more tasks to tootctl

- tootctl feeds build
- tootctl feeds clear
- tootctl accounts refresh

Clean up exit codes and help messages

* Move user modifying to tootctl

* Improve user modification through CLI, rename commands

add -> create
mod -> modify
del -> delete

To remove ambiguity

* Fix code style issues

* Fix not being able to unset admin/mod role

Found via `codespell -q 3 --skip="./app/javascript/mastodon/locales,./config/locales"`

* CLI interface for creating/deleting local users

- tootctl accounts add USERNAME
- tootctl accounts del USERNAME

* Add CLI interface for culling remote users that no longer exist

- tootctl accounts cull

* Add --verbose and --dry-run options to CLI interface for removing remote media.

* Fix coding style problem.

* Fix that can't delete media files even if "tootctl media remove" execute when "--background" not attached.

* Revert

This reverts commit 5aa7e09645.

* Change to obtain and pass all columns when "--background" option is false.

* If an Update is signed with known key, skip re-following procedure

Because it means the remote actor did *not* lose their database

* Add CLI method for rotating keys

    bin/tootctl accounts rotate [USERNAME]

Generates a new RSA key per account and sends out an Update activity
signed with the old key.

* Key rotation: Space out Update fan-outs every 5 minutes per 1000 accounts

* Skip suspended accounts in key rotation

bin/tootctl emoji import PATH_TO_TAR

Fix #8435

./bin/tootctl media remove --days 7 --background

Make the old rake task point to it

* User agent for WebFinger

* local_domain → web_domain

* 'http' is away accidentally...

* Revert "Fixes/do not override timestamps (#7331)"

This reverts commit 581a5c9d29.

* Document Snowflake ID corner-case a bit more

Snowflake IDs are used for two purposes: making object identifiers harder to
guess and ensuring they are in chronological order. For this reason, they
are based on the `created_at` attribute of the object.

Unfortunately, inserting items with older snowflakes IDs will break the
assumption of consumers of the paging APIs that new items will always have
a greater identifier than the last seen one.

* Add `override_timestamps` virtual attribute to not correlate snowflake ID with created_at

* Add support for separate Redis for cache

CACHE_REDIS_URL to allow using a different Redis server for cache
purposes, with cache-specific configuration such as key eviction

* Fix code style issues

Comparison was downcasing only one side, therefore if previously
existing account had a non-lowercase spelling, it would be ignored
when checking for duplicates.

New rake task `mastodon:maintenance:find_duplicate_usernames` will
help find constraint violations that might have occured from the
presence of this bug.

Bump version to 2.3.3