As a teacher
I want to be able to move an activity using drag and drop 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.
- The order of the sections is synchronized between Course index and course main content area.
- The order of the activities in each section is synchronized between Course index and course main content area.
- When n activity is dragged in course main content area and moved to another position in course main area content acceptance criteria 1) and 2) should be consistent.