* Revert "✌️"

This reverts commit b5b437b8.

* Welcome back, yarn.lock

[lockfiles for all](https://yarnpkg.com/blog/2016/11/24/lockfiles-for-all/)

* Use alpine package registry instead of npm's

* Avoid npx

* Remove `"`

* Follow review

refs: https://github.com/syuilo/misskey/pull/5154#discussion_r303227256

* Update lockfile

* Use yarn instead of npm run

refs: https://github.com/syuilo/misskey/pull/5154#discussion_r303227285

* Back to npm

* Follow review

refs: https://github.com/syuilo/misskey/pull/5154#discussion_r303292279

* Improve localization description

* Update CONTRIBUTING.md

* Update CONTRIBUTING.md

Use Not(IsNull())

* Add ToSUrl, repositoryUrl, feedbackUrl

* modify nodeinfo

* wip

* Update note.ts

* Update timeline.ts

* Update core.ts

* wip

* Update generate-visibility-query.ts

* wip

* wip

* wip

* wip

* wip

* Update global-timeline.ts

* wip

* wip

* wip

* Update vote.ts

* wip

* wip

* Update create.ts

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* Update files.ts

* wip

* wip

* Update CONTRIBUTING.md

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* Update read-notification.ts

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* Update cancel.ts

* wip

* wip

* wip

* Update show.ts

* wip

* wip

* Update gen-id.ts

* Update create.ts

* Update id.ts

* wip

* wip

* wip

* wip

* wip

* wip

* wip

* Docker: Update files about Docker (#4599)

* Docker: Use cache if files used by `yarn install` was not updated

This patch reduces the number of times to installing node_modules.
For example, `yarn install` step will be skipped when only ".config/default.yml" is updated.

* Docker: Migrate MongoDB to Postgresql

Misskey uses Postgresql as a database instead of Mongodb since version 11.

* Docker: Uncomment about data persistence

This patch will save a lot of databases.

* wip

* wip

* wip

* Update activitypub.ts

* wip

* wip

* wip

* Update logs.ts

* wip

* Update drive-file.ts

* Update register.ts

* wip

* wip

* Update mentions.ts

* wip

* wip

* wip

* Update recommendation.ts

* wip

* Update index.ts

* wip

* Update recommendation.ts

* Doc: Update docker.ja.md and docker.en.md (#1) (#4608)

Update how to set up misskey.

* wip

* ✌️

* wip

* Update note.ts

* Update postgre.ts

* wip

* wip

* wip

* wip

* Update add-file.ts

* wip

* wip

* wip

* Clean up

* Update logs.ts

* wip

* 🍕

* wip

* Ad notes

* wip

* Update api-visibility.ts

* Update note.ts

* Update add-file.ts

* tests

* tests

* Update postgre.ts

* Update utils.ts

* wip

* wip

* Refactor

* wip

* Refactor

* wip

* wip

* Update show-users.ts

* Update update-instance.ts

* wip

* Update feed.ts

* Update outbox.ts

* Update outbox.ts

* Update user.ts

* wip

* Update list.ts

* Update update-hashtag.ts

* wip

* Update update-hashtag.ts

* Refactor

* Update update.ts

* wip

* wip

* ✌️

* clean up

* docs

* Update push.ts

* wip

* Update api.ts

* wip

* ✌️

* Update make-pagination-query.ts

* ✌️

* Delete hashtags.ts

* Update instances.ts

* Update instances.ts

* Update create.ts

* Update search.ts

* Update reversi-game.ts

* Update signup.ts

* Update user.ts

* id

* Update example.yml

* 🎨

* objectid

* fix

* reversi

* reversi

* Fix bug of chart engine

* Add test of chart engine

* Improve test

* Better testing

* Improve chart engine

* Refactor

* Add test of chart engine

* Refactor

* Add chart test

* Fix bug

* コミットし忘れ

* Refactoring

* ✌️

* Add tests

* Add test

* Extarct note tests

* Refactor

* 存在しないユーザーにメンションできなくなっていた問題を修正

* Fix bug

* Update update-meta.ts

* Fix bug

* Update mention.vue

* Fix bug

* Update meta.ts

* Update CONTRIBUTING.md

* Fix bug

* Fix bug

* Fix bug

* Clean up

* Clean up

* Update notification.ts

* Clean up

* Add mute tests

* Add test

* Refactor

* Add test

* Fix test

* Refactor

* Refactor

* Add tests

* Update utils.ts

* Update utils.ts

* Fix test

* Update package.json

* Update update.ts

* Update manifest.ts

* Fix bug

* Fix bug

* Add test

* 🎨

* Update endpoint permissions

* Updaye permisison

* Update person.ts

#4299

* データベースと同期しないように

* Fix bug

* Fix bug

* Update reversi-game.ts

* Use a feature of Node v11.7.0 to extract a public key (#4644)

* wip

* wip

* ✌️

* Refactoring

#1540

* test

* test

* test

* test

* test

* test

* test

* Fix bug

* Fix test

* 🍣

* wip

* #4471

* Add test for #4335

* Refactor

* Fix test

* Add tests

* 🕓

* Fix bug

* Add test

* Add test

* rename

* Fix bug

* Update translationa about Nyaize

* Update translation about description of source code

* Fix translation

Closes #3109