Adjust to UW returned data

[ymdahi]

The UW endpoint will return data in the following format (note that it's an associative array that inheritly groups by role.id):

[
    {
        "1234": {
            "id": 1234,
            "user_id": "987",
            "username": "ydahi",
            "display_name": "Yasin Dahi",
            "first_name": "Yasin",
            "last_name": "Dahi",
            "role": {
                "id": 110
            }
        }
    },
    {
        "185": {
            "id": 185,
            "user_id": "textvalue",
            "username": "jsmith",
            "display_name": "Jim Smith",
            "first_name": "Jim",
            "last_name": "Smith",
            "role": {
                "id": 109
            }
        },
        "111": {
            "id": 111,
            "user_id": "",
            "username": "somename",
            "display_name": "Some Name",
            "first_name": "Some",
            "last_name": "Name",
            "role": {
                "id": 109
            }
        }
    },
    {
        "123": {
            "id": 123,
            "user_id": "123",
            "username": "jstudent",
            "display_name": "Jessica Student",
            "first_name": "Jessica ",
            "last_name": "Student",
            "role": {
                "id": 106
            }
        }
    },
....

Important Fields:

1. username: use this value to match against drupal usernames to see if account exists.
2. role.id: use this value to add the correct Drupal Role and the correct Group Role.

Role.ID mapping is provided in a separate issue.