This commit adds promotional notice on appearance settings about
translation project if any other locale than English is used. It
allows users to learn and contribute translations to Mastodon.

Step ahead, in this commit one unusual string is added - link to a
guide. By default it refers to Crowdin project itself, but if any of
Mastodon localization teams established their own guide, they can
refer it. Or, if Crowdin supports localized domain for language, it
can also be put there (e.g. https://fr.crowdin.com/...).

Currently the page re-uses strings from other contexts which doesn't fit
very well - strings incorrectly lowercase-d and pluralized, when they
don't need to be, because it's a table.

This commit changes page to re-use accounts.posts_tab_heading for toots,
and admin.accounts for "Following" and "Follows". This all should look
more aesthetically pleasing.

* Remove unused “salmon_url” string

* Remove more unused translatable strings

The following strings all used to be on the admin account page
but aren't used anymore: profile_url, outbox_url, followers_url, feed_url

Pluralize function from Rails framework does not work with other
languages than English, moreover it does not even work properly with
English [1]. Not that the latest applies to this context, it's just
a sign that we best to avoid this function, especially when there are
more reliable ways.

This commit changes how reports pages generated in order to avoid usage
of pluralize function, replacing it with default translation function,
called with given counter. On top of that, we have to make strings
pluralizable, so have to change locale files.

[1]: https://medium.com/@anna7/b3927de2ca8e#6a60

* Show badge on group actor in WebUI

* Do not notify in case of  by following group actor

* If you mention group actor, also mention group actor followers

* Relax characters that can be used in username (same as Application)

* Revert "Relax characters that can be used in username (same as Application)"

This reverts commit 7e10a137b8.

* Delete display_name method

Before this moment relationships managing page was using strings from
other context - from counters, but in order for translators to be able
to translate it relatively to the page, it must use separate strings.

I've split the strings for "Following" and "Followers" and put them to
"relationships" keyset in localization file. This should solve this
issue.

Fixes #10863

* Add ability to filter reports by target account domain

* Reword by_target_domain label

Currently notifications page seems a bit cluttered with no clear
separation between e-mail and filtering settings. This commit tries to
address them by adding clear separation with headers, hints and removing
continuously reused texts for events checkboxes.

* Add link to search for users connected from the same IP address

Fixes #11949

* Fix missing cell in admin account view table

Fix #12113

Change inaccurate labels on other admin settings

Fix #12114

Due to UX confusion and insufficient time to fix it

* Fixed not to generate link if no user used hashtag in directory

* Added missing translation for AdminUI custom emojis

* run yarn manage:translations en

* Add voters count to polls

* Add ActivityPub serialization and parsing of voters count

* Add support for voters count in WebUI

* Move incrementation of voters count out of redis lock

* Reword “voters” to “people”

Fix #11913

Fix relays UI referencing relay that is not functional

Fix #10736

- Change data export to be available for non-functional accounts
- Change non-functional accounts to include redirecting accounts

Move public domain blocks information to about page

Fix #3961

* Add search and sort functions to hashtag admin UI

* Move scope processing from tags_controller to tag_filter

* Fix based on method naming conventions

* Fixed not to get 500 errors for invalid requests

* Fix 2FA challenge not appearing for non-database users

Fix #11685

* Fix account deletion not working when using external login

Fix #11691

Fix deletion of unconfirmed account not freeing up the username

Add prefill of logged-in user's email in the reconfirmation form

Run `yarn manage:translations en`

* Add profile directory to web UI

* Add a line of bio to the directory

* Add soft delete for statuses to allow them to appear instant

* Allow reporting soft-deleted statuses and show them in the admin UI

* Change index for getting an account's statuses

* Add automatic blocklist display in /about/blocks

Inspired by https://github.com/Gargron/mastodon.social-misc

* Add admin option to set who can see instance blocks

* Normalize locales files

* Rename “Sandbox” to “Silence” for consistency

* Disable /about/blocks when in whitelist mode

* Optionally display rationale for domain blocks

* Only display domain blocks that have user-facing limitations, and order them

* Redesign table of blocked domains to better handle long domain names and rationales

* Change domain blocks ordering now that rationales aren't displayed right away

* Only show explanation for block severities actually in use

* Reword instance block explanations and add disclaimer for public fetch mode

Fix #7629

Allows determining where the majority of posts in a hashtag come
from on a given day at a glance.

* Add database columns for adding notes to domain blocks/restrctions

* Add admin UI to set private and public comments when blocking a domain

* Add text for private and public comments on domain blocks

* Show domain block comments in admin UI

* Add comments to the domain block undo page

* Make UnblockDomainService more robust regarding upgraded domain blocks

* Allow editing domain blocks

* Rename button from “undo domain block” to “view domain block” in account admin UI

* Change test to unsilence silenced users from upgraded blocks

Add better sorting defaults to the hashtags admin UI

Add "not reviewed" filter to hashtags admin UI

* Fix account tags not being saved correctly

Regression from f371b32

Fix Tag#discoverable not returning tags where listable is nil instead of true

Add notice when saving hashtags in admin UI

Change public hashtag and directory pages to return 404 for forbidden tags

* Remove unused locale string

Fix redis-namespace deprecation warning about administrative commands