Changes have been made and committed, but due to an issue https://github.com/ckan/ckan/issues/4413 it was not working. So rename the directories to 'zh_Hant_TW' and 'zh_Hans_CN' to fix the problem.
Can you please pull the latest and check the translation is correct?
I am the PostgreSQL Taiwan Community leader and have been maintaining Traditional Chinese localization since pgAdmin 3 in 2007. I paused the maintenance for several years, but now I will resume keeping it updated.
Best Regards, 郭朝益(ChaoYi, Kuo) ________________________________________________