Collaboration API should show if classmate is a grader

[mitchharvey]

Expected Behavior

Api should give a better description of type of classmate: student/faculty/grader

    {
        "image": "/ICS/icsfs/911911.jpg?target=4c66a08a-8bd7-4ee4-920c-84477c863eb6",
        "type": "grader",
        "name": "Franklin Madison Lee",
        "id": "911911"
    }

Actual Behavior

Api shows graders as students, only differentiates between faculty and students

    {
        "image": "/ICS/icsfs/911911.jpg?target=4c66a08a-8bd7-4ee4-920c-84477c863eb6",
        "isFaculty": false,
        "name": "Franklin Madison Lee",
        "id": "911911"
    }