Comment out non-functional stats in coach reports.
Merge branch 'release-0.10' of github.com:learningequality/ka-lite into coach_reports_hotfix
Merge pull request #544 from rtibbles/coach_reports_hotfix

Comment out non-functional coach reports stats
Merge branch 'release-0.10' of github.com:learningequality/ka-lite into user_list_admin_indicator