SAK-22200 Add new getCalculatedCourseGrade signature to allow retrieving all grades for a course without mapping them to letter grades. May be of use to someone writing an export routine. 


git-svn-id: https://source.sakaiproject.org/svn/edu-services/trunk@122878 66ffb92e-73f9-0310-93c1-f5514f145a0a