Added usagekey

common/djangoapps/student/views/management.py

@@ -55,7 +55,7 @@
 from eventtracking import tracker
 # Note that this lives in LMS, so this dependency should be refactored.
 from opaque_keys import InvalidKeyError
-from opaque_keys.edx.keys import CourseKey
+from opaque_keys.edx.keys import CourseKey, UsageKey
 from pytz import UTC
 from rest_framework.decorators import api_view, authentication_classes, permission_classes
 from rest_framework.permissions import IsAuthenticated