* Adds note for instance admins.

* Addresses feedback from #1925.

* Use local vars in accounts/header partial

* Use local variable in 2fa recovery codes partial

* fix regex filter

* fixed br to linebreak and, stlip tags.

* change to send raw content

* changed to unescape in reducer

```
*An* `ActiveRecord::StatementInvalid` *occurred while* `POST </settings/import>` *was processed by* `imports#create`
Exception
----------------
PG::NotNullViolation: ERROR:  null value in column "type" violates not-null constraint
```

And `i18n-tasks add-missing -l ja` changes some quotes.

* Improve PT locale on simple_form

* Add missing keys to PT locale

* Fix yaml parse issue in ja.yml locale

* Fix issue in locales/ja.jsx

assets:precompile was failling because of this missing comma.

* Add missing french translation.

Causing this error:
[React Intl] Missing message: "navigation_bar.mutes" for locale: "fr",

* Update fr.jsx

* [Update ja.jsx] Add Muted, Video_error and sorted

* [Update ja] Added Recovery code's translation

* [Update ja] Added Two-fact/Recovery's translation

* Update ja.jsx

* Unite all mandatory rake tasks in mastodon:daily
Add mastodon:media:remove_remote task
Make mastodon:maintenance:add_static_avatars more resilient to exceptions

* Fix typo in task description

Create MediaAttachment but without actual file download when domain is blocked with reject_media set to true
Clean up old media files when creating a new domain block with reject_media set to true
Return remote_url in media attachments API if local file is not present
Undo domain block action in admin UI
Ability to enable reject_media from admin UI

* Add option to disable verify partial doubles

* Add show_landing_strip? helper method

* Use show_landing_strip? helper in accounts and stream entries views

* Fix naming in view specs

See <https://glitch.social/users/bea/updates/434>

* User can create a custom.scss to customize their instance without modifying gitted files.

* Add documentation for customization.

* Forgot the helper file

* Fix Style to pass codeclimate

* Requests from maintainer.

Before it cleared out user records only (e-mail, password) without
freeing up the associated username (account record). Furthermore, since
these records have no dependent records (due to no user activity)
they can be deleted quickly with delete_all instead of destroy

An attempt to open a brand new Mastodon instance configured
as SINGLE_USER_MODE=true will cause an exception.

Enable temporary registration if we have no users in the database

Fixes #1817

* Correct site_contact_email typo

* Separate about more page into partials, add specs

Devise changed their approach -
3f3ec236bb

This change silences a deprecation warning about `TestHelpers`

* Add eslint-plugin-jsx-a11y.

* Fix npm script.

* Adjust npm scripts so test also runs lint.

* Fix existing lint errors.

* Don't break on a11y issues.

* Add role and tabIndex.

* Add vim and Mac files to .gitignore and .dockerignore.

* Handle htmlFor (partially), a that's actually a button.

* Fix missing tabIndex.

* Add cursor:pointer to load-more

* Revert change to load_more.

* Fixes based on review.

* Update yarn.lock.

* Don't try to install fsevents on Linux (hides warning noise).