Add filter for external grade only to GET user grades endpoint

Idea created by Alberto Ruiz on Mar 20, 2019
    Under review

    Add the ability to get only the external grade, (formerly  GradebookSettings.getPublicItemId() in the B2 API ) to the endpoint:

    GET /learn/api/public/v2/courses/{courseId}/gradebook/users/{userId}


    It could be implemented by adding a query parameter.

    Product Version (if applicable):0