Save site preferences for a user

[jd7h]

Two possibilities:

• Extend User with extra models, and link these with a OneToOnefield(User) https://docs.djangoproject.com/en/3.0/topics/auth/customizing/#extending-the-existing-user-model Pro: can be done anything in project Con: We need extra join-queries to get the proper info on pageload
• (preferred) Substitute built-in User model from Django https://docs.djangoproject.com/en/3.0/topics/auth/customizing/#substituting-a-custom-user-model Pro: best practice Con: needs to be implemented early in project

[jd7h]

We will do both. SitePreferences are saved as extention, but we will also have a "custom" (standard) Django User model in case we need it in the future. SitePreferences references settings.AUTH_USER_MODEL instead of a particular model.