* Fixed emoji detection problem to append border

* Add tests

* Add missing semicolon

* Fixed wrong result when includes different variation selector

* Add missing semicolon

* Remove grapheme-splitter and Change emoji list to array from string

* Update comment

* Remove spaces

Co-authored-by: ThibG <thib@sitedethib.com>

* Refactor list of emoji requiring added outlines so that it can be theme-specific

* Split inaccessible emoji to emoji requiring an outline and ones that can be inverted

* Drop the “silouhettes” from black emoji as they seem to have changed color

* Add inaccessible emojis list for the light theme

* Use bordered emoji variant instead of unreliable CSS

* Use preview card blurhash in WebUI

* Handle sensitive preview cards

* Periodically save timeline markers

This saves timeline markers immediately upon message arrival, but not more
than once every 5 minutes.

This does not change how the markers are saved on closing the window,
except that it avoids submitting them if there is no need for it.

* Use the Fetch API when possible instead of XHR on window unload

Otherwise, it may mislead users into believing this setting is an
exception to the muting behavior.

Fixes #13744

Fixes #13698

* Add remote only to public timeline

* Fix code style

Fixes #13573

For some reason (I suspect this may be related to focusing the item before it
got drown by the browser), Firefox scrolls to top when bringing up dropdown
menus with pre-selected items.

This commit uses the “preventScroll” option as, due to the placement behavior,
the menu should be visible anyway and not trigger scrolling.

Fixes #13536

- Expanding a paused video doesn't autoplay anymore
- Default volume level for the expanded video inherited from the original video

Position/playing state/volume are carried over from the original video player
to the modal, but they're not reported back to the modal as it would require
deeper changes.

Fixes #13527

- Fixes caught keyboard events being needlessly propagated
- Let up/down arrows wrap around like the tab key does
- Refactor common code

* Update Twemoji to 12.1.5

SVGs from Twemoji repo https://github.com/twitter/twemoji

* Update emoji_map.json to Unicode 12

* Fix following, followers and follow requests pagination

* Fix pagination of blocks and mutes

* Add explanation as to why unlocked accounts may have follow requests

* Change wording to avoid “silenced”

This commit redesign the polls and increases characters limit for the
options from 25 to 50 characters, giving pollsters more freedom.

Summarizing, the redesign is making the polls more adaptive for upcoming
changes to the options characters limit: the bar, or a "chart", is now
displayed separately from the option itself; vote check mark is moved
next to the option text, making the percentages take less space. Option
lengths are taken into account and text is wrapped to multiple lines
if necessary to avoid overflow.

* Make the area to the left “Show Thread” also expand the toot in Web UI

* Clicking the left part of a conversation with the avatars now opens it in Web UI

Refactor and fix #13283, which only worked in some cases.

This two-line change fixes a crash in the front end that occurred
under the following circumstances:
 *  A server had more than one announcement,
 *  A user was displaying the announcements, and
 *  An announcement was deleted (or unpublished, which amounts to
    the same thing.)

As might be expected, the bug was caused by attempting to access a
notification using an index value outside the bounds of the existing
announcements.  Specifically, in two places.  First,
`_markAnnouncementAsRead` attempts to modify announcements based on
the current index.  This is what caused the front end crash.  Second,
when rendering the `Announcements` component, the code paginates the
announcements and displays the current one.  This did not cause a
crash, but caused the front end to confusingly display a blank
announcement (in situations that would have caused a crash) with no
way for the user to navigate back to previous announcements.

This commit fixes both issues by adding a check to ensure that the
code never attempts to access an announcement with an index greater
than or equal to the number of announcements present.

The boost count is already removed from private toots,
do the same with direct messages.

* Change the string "hidden" to "blocked" in WebUI.

* update

* Add support for links to public statuses in announcements to be opened in WebUI

* Please CodeClimate

* JS-linter: fix trailing comma's

* Configure eslinter to ignore this onchange error.

* Improve description of privacy levels in compose interface

* Change strings in defaultMessage and source as well as english

Co-authored-by: Thibaut Girka <thib@sitedethib.com>

Blocking a domain is closer to blocking all its users than to a mute
action.

* Change meaning of /api/v1/announcements/:id/dismiss to mark an announcement as read

* Change how unread announcements are counted in UI

* Add unread marker to announcements and mark announcements as unread as they are displayed

* Fixups

Change `all_day` to be a visual client-side cue only

Publish immediately if `scheduled_at` is in the past

Add `published_at` and `updated_at` to announcements JSON

* Move announcements above scroll container; add button to temporarily hide them

* Remove interface for dismissing announcements

* Display number of unread announcements

* Count unread announcements accurately

* Fix size of announcement box not fitting the currently displayed announcement

* Fix announcement box background color to match button color

In detailed status component, "More" action bar button wasn't
localized. This commit fixes it according to previously used code.

* Add announcements

Fix #11006

* Add reactions to announcements

* Add admin UI for announcements

* Add unit tests

* Fix issues

- Add `with_dismissed` param to announcements API
- Fix end date not being formatted when time range is given
- Fix announcement delete causing reactions to send streaming updates
- Fix announcements container growing too wide and mascot too small
- Fix `all_day` being settable when no time range is given
- Change text "Update" to "Announcement"

* Fix scheduler unpublishing announcements before they are due

* Fix filter params not being passed to announcements filter

* Add “account timeline” filter category

Previously, no filter category applied to account timelines.

* Rename “Account timelines” into “Profiles”

Fixes #12921

Change video player to not loop, since the audio player doesn't

Change playback and mute buttons to feel snappier

Fixes #12770