Added hooks to menu so that custom web pages could be added to the Course Timetabling menu.
Added hooks to menu so that custom web pages could be added to the Course Timetabling menu.

zuzanamullerova/unitime,maciej-zygmunt/unitime,UniTime/unitime,nikeshmhr/unitime,sktoo/timetabling-system-,UniTime/unitime,rafati/unitime,UniTime/unitime,nikeshmhr/unitime,rafati/unitime,sktoo/timetabling-system-,maciej-zygmunt/unitime,maciej-zygmunt/unitime,zuzanamullerova/unitime,sktoo/timetabling-system-,rafati/unitime,zuzanamullerova/unitime,nikeshmhr/unitime