Add localization for time days

[LinuxSuRen]

Proposed changelog entries

• Entry 1: Localization, time unit for day

Submitter checklist

• JIRA issue is well described
• Changelog entry appropriate for the audience affected by the change (users or developer, depending on the change). Examples
  * Use the Internal: prefix if the change has no user-visible impact (API, test frameworks, etc.)
• Appropriate autotests or explanation to why this change has no tests
• For dependency updates: links to external changelogs and, if possible, full diffs

Desired reviewers

@jenkinsci/chinese-localization-sig

[oleg-nenashev]

definitely does not make it worse. IIUC these localization files will stay in the core for a while

[LinuxSuRen]

Yes, I still working on Java Source Localization. It's hard to migrate these and do not any change the base code.