Fix #271

Add back the `GET /api/v1/trends` API with the caveat that it does
not return tags that have not been allowed to trend by the staff.

When a hashtag begins to trend (internally) and that hashtag has
not been previously reviewed by the staff, the staff is notified.

The new admin UI for hashtags allows filtering hashtags by where
they are used (e.g. in the profile directory), whether they have
been reviewed or are pending reviewal, they show by how many people
the hashtag is used in the directory, how many people used it
today, how many statuses with it have been created today, and it
allows fixing the name of the hashtag to make it more readable.

The disallowed hashtags feature has been reworked. It is now
controlled from the admin UI for hashtags instead of from
the file `config/settings.yml`

* Bump json-ld-preloaded from 3.0.2 to 3.0.3

Bumps [json-ld-preloaded](https://github.com/ruby-rdf/json-ld-preloaded) from 3.0.2 to 3.0.3.
- [Release notes](https://github.com/ruby-rdf/json-ld-preloaded/releases)
- [Commits](https://github.com/ruby-rdf/json-ld-preloaded/compare/3.0.2...3.0.3)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

* use json-ld edge

* Change full logo to use primary text color of the given theme

* Fix colors of public layout header in light theme

Fix sorting of the pending accounts page

* Revert "Fix filtering of favourited_by, reblogged_by, followers and following (#10447)"

This reverts commit 120544067f.

* Revert "Hide blocking accounts from blocked users (#10442)"

This reverts commit 62bafa20a1.

* Improve blocked view of profiles

- Change "You are blocked" to "Profile unavailable"
- Hide following/followers in API when blocked
- Disable follow button and show "Profile unavailable" on public profile as well

Also, fix some n+1 queries

Resolve #10365

Red crosses implied that it was bad/unexpected that certain features
were not enabled. In reality, they are options, so showing a green
or grey power-off icon is more appropriate.

Add status of timeline preview as well

Fix sample accounts changing too frequently due to wrong query

Sample accounts are intended to be sorted by popularity

Rename "abandoned" to "moved", and "active" to "primary"

* Add specs for ActionLogHelper

* Make some methods private

methods below never referenced from outside of their module:

- #linkable_log_target
- #log_target_from_history

Fix #6856
Fix #6951

* Fix poll update handler calling method was that was not available

Fix regression from #10209

* Refactor VoteService

* Refactor ActivityPub::DistributePollUpdateWorker and optimize it

* Fix typo

* Fix typo

* Do not error out on unsalvageable errors in FetchRepliesService

Fixes #10152

* Fix FetchRepliesWorker erroring out on deleted statuses

* Fix ActivityPub poll results being serialized even with hide_totals

* Fix poll refresh button having a different font size

* Display poll in OpenGraph description

* Fix NoMethodError when serializing votes

Regression from #10158

* Fix polls on public pages being broken for non-logged-in users

* Do not show time remaining if poll has no expiration date

* I18n: Update Czech pluralization

* I18n: Fix some language names

* I18n: Fix some language names

* Add attachment list fallback to public pages

Fixes #6714

* Refactor attachments lists

* Add moderation warnings

Replace individual routes for disabling, silencing, and suspending
a user, as well as the report update route, with a unified account
action controller that allows you to select an action (none,
disable, silence, suspend) as well as whether it should generate an
e-mail notification with optional custom text. That notification,
with the optional custom text, is saved as a warning.

Additionally, there are warning presets you can configure to save
time when performing the above.

* Use Account#local_username_and_domain

* Do not animate account header art if user's GIF autoplay setting is off

Fixes #9472

* Honour currently logged-in user's GIF autoplay setting for account avatars

Fixes #9467

* Fix avatar display on some public pages when data is stored on a different host

* Use ternary operator instead of if/else for avatar/header URL

* Fix markup in admin/accounts/:id table for avatar

* Add admin ability to remove an user's header image

Fix #5578

* Improve overview of accounts in admin UI

- Display suspended status, role, last activity and IP prominently
- Default to showing local accounts
- Default to not showing suspended accounts

* Remove unused strings

* Fix tests

* Allow filtering accounts by IP mask

Regression from #8942

* Revert "Fix some icon names changed by the Font Awesome 5. (#8796)"

This reverts commit 3f9ec3de82.

* Revert "Migrate to font-awesome 5.0. (#8799)"

This reverts commit 8bae14591b.

* Revert "Fix some icons names, unavailable in fontawesome5 (free license). (#8792)"

This reverts commit b9c727a945.

* Revert "Update the icon name changed by the Font Awesome 5. (#8776)"

This reverts commit 17af4d27da.

* Revert "Add bot icon to bot avatars and migrate to newer version of Font Awesome (#8484)"

This reverts commit 4b794e134d.

* Verify link ownership with rel="me"

* Add explanation about verification to UI

* Perform link verifications

* Add click-to-copy widget for verification HTML

* Redesign edit profile page

* Redesign forms

* Improve responsive design of settings pages

* Restore landing page sign-up form

* Fix typo

* Support <link> tags, add spec

* Fix links not being verified on first discovery and passive updates

* Group reports by target account

* Improve CSS

* Added Czech language option

* Added Czech language option

* Add Czech locale data

* Delete duplicate locale-data/cs.js

Duplicate locale-data is ignored in Mastodon.

see https://github.com/tootsuite/mastodon/blob/v2.5.0/config/webpack/generateLocalePacks.js#L25-L35

* Enable ro and ta locales in Rails

* Add Tamil and Romanian to language dropdown

Fix #8573