* Fix embedded SVG fill attribute

SCSS darken/lighten functions may not return a color value, but a color
name like "white".  See following example:

https://www.sassmeister.com/gist/c41da93b87d536890ddf30a1f42e7816

This patch will normalize $color argument to FFFFFF style.

I also changed the function name from "url-friendly-colour" to
"hex-color", Because...

1. The name "url-friendly" is not meaningful enough to describe what it
   does.

2. It is familier to me using "color" rather than "colour"

    kojima:kojiMac mastodon[master]$ git grep -l colour
    app/javascript/styles/boost.scss
    spec/fixtures/files/attachment.jpg

    kojima:kojiMac mastodon[master]$ git grep -l color
    .rspec
    .scss-lint.yml
    Gemfile.lock
    app/javascript/mastodon/features/status/components/action_bar.js
    app/javascript/styles/about.scss
    app/javascript/styles/accounts.scss
    app/javascript/styles/admin.scss
    app/javascript/styles/basics.scss
    app/javascript/styles/boost.scss
    app/javascript/styles/compact_header.scss
    app/javascript/styles/components.scss
    app/javascript/styles/containers.scss
    app/javascript/styles/footer.scss
    app/javascript/styles/forms.scss
    app/javascript/styles/landing_strip.scss
    app/javascript/styles/reset.scss
    app/javascript/styles/stream_entries.scss
    app/javascript/styles/tables.scss
    app/javascript/styles/variables.scss
    app/views/admin/subscriptions/_subscription.html.haml
    app/views/layouts/application.html.haml
    app/views/layouts/error.html.haml
    app/views/manifests/show.json.rabl
    bin/webpack-dev-server
    config/initializers/httplog.rb
    public/500.html
    public/emoji/1f1e6-1f1e8.svg
    public/emoji/1f1ec-1f1f8.svg
    public/emoji/1f1f3-1f1ee.svg
    public/emoji/1f1fb-1f1ec.svg
    spec/fixtures/requests/idn.txt
    yarn.lock

* Add semicolon

* i18n: minor changes in Polish translation

* Update pl.json

* Added Korean Translation (based on japanese)

* Update korean translation

* Update korean translation: fix syntax error

* Updated korean translation

* Update korean translation

* Update ko.json

Translate non-translated parts

* Update ko.yml

Translated missed parts - and fixed some typos

* Create simple_form.ko.yml

* Update simple_form.ko.yml

Translation error fix - password change form

* Update simple_form.ko.yml

* Update ko.json

Missing translation

* Added Korean Translation (based on japanese)

* Update korean translation

* Update korean translation: fix syntax error

* Updated korean translation

* Update korean translation

* Update ko.json

Translate non-translated parts

* Update ko.yml

Translated missed parts - and fixed some typos

* Create simple_form.ko.yml

* Updated korean translation

* i18n: fix test fails

In from_redis method, statuses retrieved from the database was mapped to
the IDs retrieved from Redis. It was equivalent to order from high to low
because those IDs are sorted in the same order.
Statuses are ordered with the ID by default, so we do not have to reorder.
Sorting statuses in the database is even faster since the IDs are indexed
with B-tree.

* add missing locales for French translation

* accent "Media" in the front-end locales

* images => médias

* Change 'rapport' to 'signalement' in French locales to be more coherent

* fix typo

* remove duplicate EN locale

* translate missing locales

* update missing locale

* fix typo

* unify with "utilisateur⋅ice⋅s"

* address PR comments

* Faster emojify() algorithm, avoid regex replace

* add semicolon

Signed-off-by: Marcin Mikołajczak <me@m4sk.in>

* Use instance name in "password changed" mail

instead of "Mastodon".

Fixes tootsuite#2620.

* Use instance name in password reset mail

instead of "Mastodon".

* feat(components/media_gallery): Responsive images

* fix(components/media_gallery): Link to image URL

* Fix #3910 - Require OTP authentication to disable 2FA. Also, remove ability
to generate new OTP backup codes *after* initial backup codes were handed
out during activation

* Restore recovery code re-generation

* Improve display of some 2FA elements

* Add overview of active sessions

* Better display of browser/platform name

* Improve how browser information is stored and displayed for sessions overview

* Fix test

* Fix #2347 - Bind web UI access token to session

When you logout, session also destroys the access token, so it's no longer
valid. If access token is destroyed some other way, the session is also
destroyed, requiring a re-login.

Fix #1681 - Add scheduler to remove revoked access tokens and grants

* Fix test