[CoursePress Pro] Parent access (view a student's progress)

It would be great if parents could get access to their children's reports and grades and have visibility of their progress.

This would also be very useful for teachers of other courses to have visibility to their students' progress in other courses (e.g. on other sites in the network), i.e. a read-only view of their grades and progress.

To do this I'd expect the teacher/facilitator/admin as appropriate could add users to the student as a parent or viewer, and there would be a parents'/viewers access to data.