* merged Api::V1::Enrollment into Api::V1::User because of a circular
dependency
* adding enrollments and email fields to #user_json
* adding associated_user_id, updated_at, and locked fields to
#enrollment_json
/api/v1/courses/:course_id/users
test plan:
* create a course
* enroll a user twice in the course (e.g. a TA)
* call the api with 'enrollments' and 'email' in include[]
* verify that the user data includes an email and two enrollments
Change-Id: I2f09c72c0e60fb7d2cd5bc7b585834970ad7a7cf
Reviewed-on: https://gerrit.instructure.com/9607
Reviewed-by: Jon Jensen <jon@instructure.com>
Tested-by: Hudson <hudson@instructure.com>