Update translations from Crowdin.

- Update Spanish, French, and Chinese.
- Add Italian, Japanese, and Korean.
Synchronization with Crowdin

Synchronization with Crowdin

Synchronization with Crowdin

Delete config.json~

Delete config.json~

Delete config.json~

Synchronization with Crowdin

Synchronization with Crowdin

Synchronization with Crowdin

Synchronization with Crowdin

Sync with Crowdin 9/9 code updates
Move Japanese to docs/ja and Korean to docs/ko.