Constraint solver update  - bugfix in the course timetable XML loader
Constraint solver update
 - bugfix in the course timetable XML loader

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