Updated the student mapping to select major codes by a subselect so there is only one result per student.
Updated the student mapping to select major codes by a subselect so there is only one result per student.

git-tfs-id: [https://tfs.caes.ucdavis.edu:8088/tfs]$/Commencement/Trunk/Commencement;C7966

ucdavis/Commencement,ucdavis/Commencement,ucdavis/Commencement