Markhoeber/documentation/stud 1260

See draft documentation at:  http://draft-nested-components.readthedocs.org/en/latest/organizing_course.html#nested-components
I'm not sure what this means. It seems to imply that there's a list of possible configurations the user can select from, but I suspect that the user clicks an **Add** button, or selects groups and clicks a **Remove** button. In any case, we should probably be more specific.