test plan:
* enable avatars on the root account,
* create a course with multiple students
* a student should be able to look at the
course profile of another user in the course
and report their avatar
* when reported, should be able to be seen by
account admins at "/accounts/X/avatars"
* should work with profiles enabled or disabled
closes #CNVS-13849 #CNVS-4781
Change-Id: I97f62ca709321233c8a57cd6f1bd9870dc50d215
Reviewed-on: https://gerrit.instructure.com/49781
Tested-by: Jenkins
Reviewed-by: Jeremy Stanley <jeremy@instructure.com>
QA-Review: Clare Strong <clare@instructure.com>
Product-Review: Cosme Salazar <cosme@instructure.com>