Add test code for getting and setting quarter name
Add test case for add course and getting a course
Add case for add course and getting a course
Add test code for removing a course from quarter
Add code for removing a course from quarter
Add more test cases for removing a course from quarter
Add test cases for getting the total credit hours in quarter
Add code for getting the total credit hours in quarter
Add test code for getting setting rubric in a course
Add test code for getting letter grade for a course
Add test code for getting gpa for a course
Add code for getting gpa and lettergrade for a course
Merge branch 'shahdk'