Redesign configuration

[nijel]

Weblate uses Django settings since the beginning. It might be time to revisit this decision as in many cases this causes troubles.

• The settings is Python code, what makes it powerful, but most people do not need this
• The settings live in the Python site packages, what makes it look like code, while it actually is not
• Most of the settings are not supposed be changed by users and forgetting doing that on upgrade can lead to subtle breakage
• We have additional layer on top of that to load settings from the environment in Docker container, maybe we could use something shared for both environments

[nijel]

We might want to try something like https://pydantic-docs.helpmanual.io/ for loading from the environment.

[github-actions]

This issue has been added to the backlog. It is not scheduled on our roadmap, but it eventually might be implemented. In case you desperately need this feature, please consider helping or funding the development.