Add Swahili language

[hongquan]

Fixes #265.

This PR include update of PO files from other languages because those files have not been updated after changes in previous PRs.

How has this been tested?

Checklist

• I have added tests to cover my changes.

Summary by Sourcery

Adds support for the Swahili language to the application by including it in the available language options.

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request adds support for the Swahili language to the application. It includes changes to the settings file to register the new language and adds an empty django.po file for translations. Additionally, it updates multiple django.po files and the django.pot file.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
Added Swahili language support to the application.	Added a new language code 'sw' to the list of supported languages. Configured the language with its name, natural name, official status, and initial percentage. Added an empty django.po file for the Swahili language.	src/pretalx/settings.py src/pretalx/locale/sw/LC_MESSAGES/django.po
Updated multiple django.po files.	Updated the django.po files for the following languages: Arabic, Catalan, Czech, German (both formal and informal), Greek, Spanish, Mexican Spanish, French, Indonesian, Italian, Japanese, Korean, Dutch, Brazilian Portuguese, Portuguese, Russian, Slovenian, Swedish, Vietnamese, and Chinese (both simplified and traditional).	src/pretalx/locale/ar/LC_MESSAGES/django.po src/pretalx/locale/ca/LC_MESSAGES/django.po src/pretalx/locale/cs/LC_MESSAGES/django.po src/pretalx/locale/de_DE/LC_MESSAGES/django.po src/pretalx/locale/de_Formal/LC_MESSAGES/django.po src/pretalx/locale/el/LC_MESSAGES/django.po src/pretalx/locale/es/LC_MESSAGES/django.po src/pretalx/locale/es_MX/LC_MESSAGES/django.po src/pretalx/locale/fr_FR/LC_MESSAGES/django.po src/pretalx/locale/id/LC_MESSAGES/django.po src/pretalx/locale/it/LC_MESSAGES/django.po src/pretalx/locale/ja_JP/LC_MESSAGES/django.po src/pretalx/locale/ko/LC_MESSAGES/django.po src/pretalx/locale/nl/LC_MESSAGES/django.po src/pretalx/locale/pt_BR/LC_MESSAGES/django.po src/pretalx/locale/pt_PT/LC_MESSAGES/django.po src/pretalx/locale/ru/LC_MESSAGES/django.po src/pretalx/locale/sl/LC_MESSAGES/django.po src/pretalx/locale/sv/LC_MESSAGES/django.po src/pretalx/locale/vi/LC_MESSAGES/django.po src/pretalx/locale/zh_Hans/LC_MESSAGES/django.po src/pretalx/locale/zh_Hant/LC_MESSAGES/django.po
Updated the django.pot file.	Updated the django.pot file.	src/pretalx/locale/django.pot

Assessment against linked issues

Issue	Objective	Addressed	Explanation
#265	Add Swahili as a language option in event creation.	✅
#265	Add Swahili as a language option in settings.	✅
#265	Fix integration system with weblate.	❌	The PR only adds the Swahili language option. It does not address the integration with Weblate.

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[sourcery-ai]

Hey @hongquan - I've reviewed your changes - here's some feedback:

Overall Comments:

• Please ensure the new language is added to the LANGUAGES setting in settings.py.

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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[hongquan]

@sourcery-ai: The LANGUAGES settings is dymamically computed from LANGUAGES_INFORMATION and already include Swahili.

[norbusan]

Why are there soooooo many changes in unrelated files?