Added dropdown on tutoroverview page to set tutors exercise groups

core/views/common_views.py

@@ -31,7 +31,8 @@ from core.serializers import (ExamSerializer, StudentInfoSerializer,
                               SubmissionNoTypeSerializer, StudentSubmissionSerializer,
                               SubmissionTypeSerializer, CorrectorSerializer,
                               UserAccountSerializer, SolutionCommentSerializer,
-                              SubmissionNoTypeWithStudentSerializer)
+                              SubmissionNoTypeWithStudentSerializer,
+                              GroupSerializer)
 
 log = logging.getLogger(__name__)
 config = constance.config