News in multiple languages

[mikaelGusse]

Description

What?

https://github.com/apluslms/a-plus/assets/159019283/3c184456-cbdd-4206-862e-9adf40b6904b

Adds the option to create news items in a specific language while preserving the possibility to create news items that are visible for everyone.

Why?

Suggested by teachers and further facilitates easier management of multilingual courses.

How?

Added a datapoint to the news model for language and updated the news creation form to allow the user to choose the language of the object.

Fixes #1134

Testing

Remember to add or update unit tests for new features and changes.

• How to test your changes in A-plus
• How to test accessibility

What type of test did you run?

• [x] Accessibility test using the WAVE extension.
• [x] Django unit tests.
• [ ] Selenium tests.
• [ ] Other test. (Add a description below)
• [x] Manual testing.

Went into the views where the news were visible and made sure everything worked.

Did you test the changes in

• [ ] Chrome
• [x] Firefox
• [ ] This pull request cannot be tested in the browser.

Think of what is affected by these changes and could become broken

Translation

• [x] Did you modify or add new strings in the user interface? (Read about how to create translation)

Programming style

• [x] Did you follow our style guides?
• [x] Did you use Python type hinting in all functions that you added or edited? (type hints for function parameters and return values)

Have you updated the README or other relevant documentation?

• [ ] documents inside the doc directory.
• [ ] README.md.
• [ ] Aplus Manual.
• [ ] Other documentation (mention below which documentation).

Is it Done?

• [ ] Reviewer has finished the code review
• [ ] After the review, the developer has made changes accordingly
• [ ] Customer/Teacher has accepted the implementation of the feature

Clean up your git commit history before submitting the pull request!