Merge pull request #6 from VanGrack/jesse_working_branch

Jesse working branch
Finished writing code for Assignment, AssignmentCategory, GhostStudent, MyCourse, and Student objects.
Testing is incomplete, The GhostGraderObjectsTestFile does not completely test all of the objects
Merge pull request #7 from VanGrack/jesse_working_branch

Finished writing code for Assignment, AssignmentCategory, GhostStudent, ...