As a teacher
I want to be able to highlight and remove highlight sections and see the change applied in the course index
so I don't need to reload the page to confirm the changes were properly applied.
For Topic core format:
- Highlighted section is styled differently in the course index
- Highlighted section is synchronized between Course index and course main content area.
- When section is highlighted in the course main content area is also marked as highlighted in the course index.
- When highlight is removed for a section in the course main content area is not marked as highlighted in the course index anymore.