Fix student coach report view to generate granular sub topic data for each lower level sub topic.
Created circles representing the completion of subtopics.
Merge branch 'student_coach_report' of https://github.com/rtibbles/ka-lite into student_coach_report

Conflicts:
	kalite/coachreports/templates/coachreports/student_view.html
	kalite/coachreports/views.py
Added clickable circles that indicate progress on each subtopic. When clicked, each circle expands
into a description box, provding more info on the suptopic.
Merge branch 'nalanda-rct3' into studentcoachreports

Conflicts:
	kalite/coachreports/templates/coachreports/student_view.html
	kalite/coachreports/views.py
Cleans up display of progress summary boxes for student coach reports.
Merge pull request #2212 from rtibbles/studentcoachreports

Student Coach Report Redesign