Fix #1258

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

Yarn was manually installed to meet the Yarn version requirement of
webpacker. Today, Alpine Linux 3.7 provides Yarn new enough.

It is no longer necessary since commit
be9bab17.

* Add AUTHORS file with information taken from the git log. Authors are listed in order of appearance.

* Remove AUTHORS file with raw log information

* Add AUTHORS.md listing contributors with GitHub usernames and profile links

* Update AUTHORS.md

* Translated using Weblate (Galician)

Currently translated at 100.0% (580 of 580 strings)

Translation: Mastodon/Backend
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/backend/gl/

* Translated using Weblate (Dutch)

Currently translated at 100.0% (580 of 580 strings)

Translation: Mastodon/Backend
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/backend/nl/

* Translated using Weblate (Japanese)

Currently translated at 99.8% (579 of 580 strings)

Translation: Mastodon/Backend
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/backend/ja/

* Translated using Weblate (Dutch)

Currently translated at 100.0% (581 of 581 strings)

Translation: Mastodon/Backend
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/backend/nl/

* Translated using Weblate (Dutch)

Currently translated at 100.0% (276 of 276 strings)

Translation: Mastodon/React
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/frontend/nl/

* Translated using Weblate (Portuguese (Brazil))

Currently translated at 100.0% (276 of 276 strings)

Translation: Mastodon/React
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/frontend/pt_BR/

* Translated using Weblate (French)

Currently translated at 99.8% (580 of 581 strings)

Translation: Mastodon/Backend
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/backend/fr/

* Translated using Weblate (German)

Currently translated at 99.3% (577 of 581 strings)

Translation: Mastodon/Backend
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/backend/de/

* Translated using Weblate (German)

Currently translated at 99.3% (577 of 581 strings)

Translation: Mastodon/Backend
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/backend/de/

* Translated using Weblate (Portuguese (Brazil))

Currently translated at 100.0% (62 of 62 strings)

Translation: Mastodon/Devise
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/devise/pt_BR/

* Translated using Weblate (Portuguese (Brazil))

Currently translated at 99.8% (580 of 581 strings)

Translation: Mastodon/Backend
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/backend/pt_BR/

* Translated using Weblate (Japanese)

Currently translated at 99.8% (580 of 581 strings)

Translation: Mastodon/Backend
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/backend/ja/

* Translated using Weblate (German)

Currently translated at 100.0% (276 of 276 strings)

Translation: Mastodon/React
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/frontend/de/

* Translated using Weblate (Catalan)

Currently translated at 100.0% (581 of 581 strings)

Translation: Mastodon/Backend
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/backend/ca/

* Translated using Weblate (French)

Currently translated at 100.0% (276 of 276 strings)

Translation: Mastodon/React
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/frontend/fr/

* Translated using Weblate (French)

Currently translated at 99.8% (580 of 581 strings)

Translation: Mastodon/Backend
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/backend/fr/

* Translated using Weblate (Slovak)

Currently translated at 100.0% (276 of 276 strings)

Translation: Mastodon/React
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/frontend/sk/

* Translated using Weblate (Polish)

Currently translated at 99.8% (580 of 581 strings)

Translation: Mastodon/Backend
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/backend/pl/

* Translated using Weblate (Esperanto)

Currently translated at 100.0% (581 of 581 strings)

Translation: Mastodon/Backend
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/backend/eo/

* Translated using Weblate (Esperanto)

Currently translated at 100.0% (581 of 581 strings)

Translation: Mastodon/Backend
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/backend/eo/

* Translated using Weblate (Esperanto)

Currently translated at 100.0% (276 of 276 strings)

Translation: Mastodon/React
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/frontend/eo/

* Translated using Weblate (Slovak)

Currently translated at 90.3% (525 of 581 strings)

Translation: Mastodon/Backend
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/backend/sk/

* Translated using Weblate (Japanese)

Currently translated at 99.8% (580 of 581 strings)

Translation: Mastodon/Backend
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/backend/ja/

* Translated using Weblate (Galician)

Currently translated at 100.0% (581 of 581 strings)

Translation: Mastodon/Backend
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/backend/gl/

* Normalize translations
Ran i18n-tasks normalize && yarn manage:translations

- Add missing meta description to profiles
- Add canonical rel link to landing page
- Remove linebreaks from title tags
- Add username to profile title
- Add toots/following/followers to profile description tags
- Add next/prev rel links to profiles
- Do not index follower/following variants of profiles

Fix #6670

* Improve styling of closed registrations message, rename button

"Sign up on another server"

Fix #6683

* Adjust styling of closed registrations message

Fix #6677

Media attachments are part of the association cache of statuses,
since they are presumed to be immutable. Unless this cache is
cleared manually, the statuses will continue to look like they
have media embedded.

* Translated using Weblate (French)

Currently translated at 99.8% (578 of 579 strings)

Translation: Mastodon/Backend
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/backend/fr/

* Translated using Weblate (French)

Currently translated at 99.8% (578 of 579 strings)

Translation: Mastodon/Backend
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/backend/fr/

* Translated using Weblate (French)

Currently translated at 99.8% (578 of 579 strings)

Translation: Mastodon/Backend
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/backend/fr/

* Translated using Weblate (French)

Currently translated at 100.0% (275 of 275 strings)

Translation: Mastodon/React
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/frontend/fr/

* Translated using Weblate (Slovak)

Currently translated at 85.3% (494 of 579 strings)

Translation: Mastodon/Backend
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/backend/sk/

* Translated using Weblate (Slovak)

Currently translated at 100.0% (275 of 275 strings)

Translation: Mastodon/React
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/frontend/sk/

* Translated using Weblate (Japanese)

Currently translated at 100.0% (275 of 275 strings)

Translation: Mastodon/React
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/frontend/ja/

* Translated using Weblate (Portuguese (Brazil))

Currently translated at 100.0% (275 of 275 strings)

Translation: Mastodon/React
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/frontend/pt_BR/

* Translated using Weblate (Portuguese (Brazil))

Currently translated at 99.8% (578 of 579 strings)

Translation: Mastodon/Backend
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/backend/pt_BR/

* Translated using Weblate (Japanese)

Currently translated at 100.0% (275 of 275 strings)

Translation: Mastodon/React
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/frontend/ja/

* Translated using Weblate (Arabic)

Currently translated at 99.2% (273 of 275 strings)

Translation: Mastodon/React
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/frontend/ar/

* Translated using Weblate (Japanese)

Currently translated at 100.0% (275 of 275 strings)

Translation: Mastodon/React
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/frontend/ja/

* Translated using Weblate (Arabic)

Currently translated at 66.8% (387 of 579 strings)

Translation: Mastodon/Backend
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/backend/ar/

* Translated using Weblate (Arabic)

Currently translated at 93.1% (54 of 58 strings)

Translation: Mastodon/Preferences
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/simple_form/ar/

* Translated using Weblate (French)

Currently translated at 99.8% (578 of 579 strings)

Translation: Mastodon/Backend
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/backend/fr/

* Translated using Weblate (Slovak)

Currently translated at 87.7% (508 of 579 strings)

Translation: Mastodon/Backend
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/backend/sk/

* Translated using Weblate (Japanese)

Currently translated at 100.0% (275 of 275 strings)

Translation: Mastodon/React
Translate-URL: https://weblate.joinmastodon.org/projects/mastodon/frontend/ja/

* bundle exec i18n-tasks normalize && yarn manage:translations

* Remove ar.simple_form.hints.defaults.{display_name,note}

* Rescue when there's no extension in the remotable
Sometimes the remotable is pointing to a directory with no file
extension. Maybe it should not be expecting to identify based on
extensions to begin with, but since it's the case, it should be ready
for it.

* Fix codeclimate issue

* Check if filename is nil instead of rescueing exception
Suggestion made in the PR

* Avoid concatenation issue if filename is nil
If filename is nil, extname was undefined

* Invert condition
Address PR comments

* fix validation error (media only status)

* Incorporating review suggestions

* Reflect similar fix to OStatus side

* Fix not to include media in transaction

* Restore the limit of the number of media

* Fix not to return nil

Add additional first_name and last_name SAML attribute statement options, and modify Omniauthable concern to use full_name or first_name + last_name if not available (#6669)