Regression from f371b32

* Change icon buttons styles to make hover/focused states more obvious

* Fix CW button size inconsistency

* Fix icon button background color consistency

Regression from aa22b38

* Fix jumping of toot date when clicking spoiler button

* Fix lint

* Add search results pagination to web UI

Fix #10737

* Fix code style issue

Fixes #11389

Allow access to account settings, 2FA, authorized applications, and
account deletions to unconfirmed and pending users, as well as
users who had their accounts disabled. Suspended users cannot update
their e-mail or password or delete their account.

Display account status on account settings page, for example, when
an account is frozen, limited, unconfirmed or pending review.

After sign up, login users straight away and show a simple page that
tells them the status of their account with links to account settings
and logout, to reduce onboarding friction and allow users to correct
wrongly typed e-mail addresses.

Move the final sign-up step of SSO integrations to be the same
as above to reduce code duplication.

Fix #10840

* Add support for an instance actor

* Skip username validation for local Application accounts

* Add migration script to create instance actor

* Make Codeclimate happy

* Switch to id -99 for instance actor

* Remove unused `icon` and `image` attributes from instance actor

* Use if/elsif/else instead of return + ternary operator

* Add instance actor to fresh installs

* Use instance actor as instance representative

Use instance actor for forwarding reports, relay operations, and spam
auto-reporting.

* Seed database in test environment

* Fix single-user mode

* Fix tests

* Fix specs to accomodate for an extra `Account`

* Auto-reject follows on instance actor

Following an instance actor might make sense, but we are not handling that
right now, so auto-reject.

* Fix webfinger lookup and serialization for instance actor

* Rename instance actor

* Make it clear in the HTML view that the instance actor should not be blocked

* Raise cache time for instance actor as there's no dynamic content

* Re-use /about/more with a flash message for instance actor profile

* Add message telling FTS is disabled when no toot can be found because of this

Fixes #11082

* Remove info icon and reword message

* Change audio format from ogg to mp3 for wider compatibility

* Add media description as title to links of unknown media attachments

* Fix tabs bar in light theme

* Fix borders on small screens in light theme

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

* Fix colors of public layout header in light theme

* Fix emoji picker being always displayed

* Remove duplicate content with other pull-requests

* Improvement variable height of compose and navigation panel in single column layout

* Fix wrong quotes and missing commas

* Add responsive panels to the single-column layout

* Fixes

* Fix not being able to save the preference

* Fix code style issues

* Set max-height on the compose textarea and add a link to relationship manager

- Add potential side panels to single column layout
- Hide FAB on large screens

* Move TabsBar rendering logic from CSS to the ColumnsArea component

* Add forceSingleColumn mode

* Add unread notifications counter to tabs bar

* Add toggle to control `forceSingleColumn`

* Increase paddings in mobile layout responsively at large sizes

The clickable div is positioned under the account avatar and covers
all empty space below it to the end of the status.

* Fix typo in light theme

* Fix background color of empty column

* Change icon and label depending on whether media is marked as sensitive

* WiP use a checkbox

* Refactor selectComposeSuggestion so that different paths can be updated

* Add suggestions in CW field

* Add emoji suggestion to poll options

* Attempt to fix CSS

* Hide suggestions by default

They will be enabled if the input has focus

* Add distinction between hover and active/focus states
* Resolves #10198

* Fix "nothing here" text color of high contrast

* Fix counter border color of high contrast