[NIET WERKEND] Basismodel courses en de database operaties
[NIET WERKEND] Veel uitgecommentarieerde code
[NIET WERKEND] Merge met laatste versie

Merge branch 'Courses' into Courses-updated

Conflicts:
	JavaServer/calzone/src/main/java/com/vub/dao/CourseDao.java
	JavaServer/calzone/src/main/java/com/vub/model/Institution.java
	JavaServer/calzone/src/main/java/com/vub/model/User.java
Merge pull request #113 from svdvonde/Courses

Courses