Adds clean method to enforce max enrollment in classes
Merge branch 'student-view' of https://github.com/kenthorvath/njit into student-view
Adds clean method to enforce max number of classes students can enroll in (6)
Adds clean method to enforce max time slots on sections
Merge branch 'master' of https://github.com/kenthorvath/njit
Merge branch 'master' of https://github.com/siwest/njit
Silently enforces student enrollment limits.