* confirm silence

* Resolve #4554

* Revert "confirm silence"

This reverts commit e1dbdc2bfc0f41c2b308b142c70e9e4573c98cf9.

* Use menu instead prompt

* fix

* https://bit.ly/2U0JuVt

* fix

* MFM in poll

* use mfm

* New translations ja-JP.yml (English)

* New translations ja-JP.yml (Polish)

* New translations ja-JP.yml (French)

* New translations ja-JP.yml (Chinese Simplified)

* New translations ja-JP.yml (Czech)

* New translations ja-JP.yml (Dutch)

* New translations ja-JP.yml (German)

* New translations ja-JP.yml (Korean)

* New translations ja-JP.yml (Norwegian)

* New translations ja-JP.yml (Spanish)

* New translations ja-JP.yml (Japanese, Kansai)

* New translations ja-JP.yml (Spanish)

* New translations ja-JP.yml (Spanish)

* New translations ja-JP.yml (German)

* New translations ja-JP.yml (Spanish)

* New translations ja-JP.yml (Spanish)

* New translations ja-JP.yml (Spanish)

* New translations ja-JP.yml (Spanish)

* New translations ja-JP.yml (Spanish)

* New translations ja-JP.yml (English)

* New translations ja-JP.yml (English)

* New translations ja-JP.yml (English)

* New translations ja-JP.yml (Polish)

* New translations ja-JP.yml (French)

* New translations ja-JP.yml (Chinese Simplified)

* New translations ja-JP.yml (Czech)

* New translations ja-JP.yml (Korean)

* New translations ja-JP.yml (Spanish)

* New translations ja-JP.yml (Japanese, Kansai)

* New translations ja-JP.yml (Chinese Simplified)

* New translations ja-JP.yml (Chinese Simplified)

* New translations ja-JP.yml (Chinese Simplified)

* New translations ja-JP.yml (Chinese Simplified)

* New translations ja-JP.yml (Czech)

* New translations ja-JP.yml (Czech)

This commit reverts "Fix Dockerfile #4214" which uses yarn instead of npm.
The cause of the build error is that binding.gyp and src/crypto_key.cc
are missing when installing dependencies.
In other words, yarn did not fix build error.

There is no reason to use yarn, so go back to npm.

* Fix: inboxに未知のユーザーが来ると処理できない

* こうかな

* Doc: Update setup documents

Use GitHub api to checkout latest release instead of "git tag" command
which cannot accurately determine prerelease tag.
Also, Changed numbered list format because
the shell command is too long to fit on one line.

* Doc: Use tab instead of spaces

* Doc: Use master branch as latest release tag

master branch and latest release is the same.
master branch merges develop branch with each latest release.