Added new assistant role

common/djangoapps/student/roles.py

@@ -272,6 +272,12 @@ class CourseBetaTesterRole(CourseRole):
     def __init__(self, *args, **kwargs):
         super(CourseBetaTesterRole, self).__init__(self.ROLE, *args, **kwargs)
 
+class CourseAssistantRole(CourseRole):
+    """A course assistant"""
+    ROLE = 'assistant'
+
+    def __init__(self, *args, **kwargs):
+        super(CourseAssistantRole, self).__init__(self.ROLE, *args, **kwargs)
 
 class CourseAssistantRole(CourseRole):
     """A course assistant"""