Merge Mikes Backend

Removed the old Backend and incorporated Mike's into the main D3L
backend folder.
Merge branch 'master' of https://github.com/n4stie/D3L

Conflicts:
	backend/D3L/war/WEB-INF/classes/edu/uwm/cs361/entities/Course.class
	backend/D3L/war/WEB-INF/classes/edu/uwm/cs361/entities/Student.class