Fixed labels in InstructorReportPanel, CourseReportPanel and PrintWindow to look nicer, and fixed up the display of the courses for a selected instructor in the InstructorPanel.
Merge pull request #72 from RichardHayesMassbay/master

Fixed labels in InstructorReportPanel, CourseReportPanel and PrintWindow to look nicer, and fixed up the display of the courses for a selected instructor in the InstructorPanel.