Improvements to Sinitic languages and script names

[winstonsung]

closes #1410
closes #1411

Bug: #1410
Bug: #1411
Change-Id: Ibc4e7802d6a331511792da37824378074722c5c0

Proposed changes

• Use "language name (script/orthography name)" instead of "Chinese (language name, script/orthography name)"
• Add Sinitic languages
• Add Formosan languages (Taiwanese aboriginal languages)
• Split gan into gan-Hans, gan-Hant
• Split hak into hak-Hans, hak-Hant, hak-Latn

Checklist

• Lint and unit tests pass locally with my changes.
• I have added tests that prove my fix is effective or that my feature works.
• I have added documentation to describe my feature.
• I have squashed my commits into logic units.
• I have described the changes in the commit messages.

Other information

[nijel]

Merged, thanks for your contribution!

[winstonsung]

@nijel wrote:
Pull requests are welcome! Master language definitions are at https://github.com/WeblateOrg/language-data/blob/main/languages.csv

Thanks. However, not all

weblate_language_data\locale\*\LC_MESSAGES\django.po

files were updated when using

make

(especially for those language tag with underscores), any ideas about the issue (or is it intended)?

[nijel]

There was missing alias for hak, I've added it in d8b763a to hak_Hant. Please correct that if it's wrong.

As for missed updates, it should be fixed by 4458b61, thanks for spotting!

[winstonsung]

There was missing alias for hak, I've added it in d8b763a to hak_Hant. Please correct that if it's wrong.

It's correct. Thanks.

As for missed updates, it should be fixed by 4458b61, thanks for spotting!

Thanks for the fix.