Merge pull request #8716 from edx/ahodges/staff_labeling

cms/templates/manage_users.html

cms/templates/manage_users_lib.html

lms/djangoapps/instructor/features/common.py

lms/djangoapps/instructor/tests/test_api.py

lms/djangoapps/instructor/views/api.py

lms/static/coffee/src/instructor_dashboard/util.coffee

...tatic/js/fixtures/instructor_dashboard/student_admin.html

...plates/instructor/instructor_dashboard_2/course_info.html

...ates/instructor/instructor_dashboard_2/data_download.html

...mplates/instructor/instructor_dashboard_2/e-commerce.html

...mplates/instructor/instructor_dashboard_2/membership.html

...mplates/instructor/instructor_dashboard_2/send_email.html

...ates/instructor/instructor_dashboard_2/student_admin.html

lms/templates/peer_grading/peer_grading.html