* i18n: (zh-CN) Add translations of #6251

* i18n: (zh-CN) Improve translations for #6291

* Fix en.json

* i18n: (zh-CN) Update translations for #6303

* i18n: (zh-CN) Add translations of #6273
with minor adjustment

* Minor fix

* Minor fix

* i18n: (zh-CN) Update translation for #6252

* e-mail -> email

* i18n: (zh-CN) Update translations for #6256

* i18n: (zh-CN) Minor Improvements

* i18n: (zh-CN) Update translations for #6263

* i18n: (zh-CN) Update translations for #6279

* i18n: (zh-CN) Add translations of #6125

* i18n: (zh-CN) Add translations of #6132

* i18n: (zh-CN) Add translations of #6099

* i18n: (zh-CN) Add translations of #6071

* i18n: (zh-CN) Improve translations

* i18n: (zh-CN) Improve translations

* i18n: (zh-CN) Change `静音` to `隐藏`

* i18n: (zh-CN) Add translations for #5087 & #5669

* i18n: (zh-CN) Improve translations

* i18n: (zh-CN) Improve translations

* i18n: (zh-CN) Improve translations

* i18n: (zh-CN) Improve translations

* i18n: (zh-CN) Add missing translation for #5728

* i18n: (zh-CN) Bug fix for note-counter.

* i18n: (zh-CN) Improve translations

* i18n: (zh-CN) Improve translations

* i18n: (zh-CN) Add missing translations

* i18n: (zh-CN) Improve translations

* i18n: (zh-CN) Add support.array key for better wording

* Revert "i18n: (zh-CN) Add support.array key for better wording"

This reverts commit 27bf9a946e.
Looks like this commit can't get pass the checks, revert it for now.

* i18n: (zh-CN) Change `客户端` to `应用`

* i18n: (zh-CN) Improve translations

* i18n: (zh-CN) Add missing translations (#5635)

* i18n: (zh-CN) Change `两步验证` to `双重认证`

* i18n: (zh-CN) Improve translations

* proofread & update zh-CN setting form locale

* Pull in new devise zh-CN translations from their wiki

https://github.com/plataformatec/devise/wiki/I18n,
more precisely https://gist.github.com/Artoria2e5/6d2a06ca9e92a417afc627b5000f4690

* pull in zh-CN translation for doorkeeper

... from https://github.com/doorkeeper-gem/doorkeeper-i18n/pull/31/