set Course::firstLab, nextLab, getLab to return reference
Rater.it10 - set rating on req lab: fail
Rater.it10 - Set rating on req lab: pass
Rater.it11 - set lab morning pref: fail
Rater.it11 - set lab morning pref: pass
Rater.it12 - set rating on afternoon lab pref: fail
Rater.it12 - set lab afternoon pref: pass
Rater.it13 - set lab before lunch break: fail
Rater.it13 - set lab after lunch break: pass
Rater.it14 - set rating for multiple labs in one course: pass
Rater commenting
Merge pull request #18 from forstermatth/rater_dev

Rater dev