Shrink the number of lines used in the empty Course constructor
Improve the Student file parser again
Remove more all_courses
Add more warnings to Clang's arguments
Change how cleanTitle works
Change operator== to use const references
ID::init defaults to NONE
Change user to a external variable
Add another debugging statement to test-data
Add another cout to data-id
Fixed a TODO (a while ago, actually.)
Stress test-data in another way