Examination -- delete from exams  - avoid iterator modification exception when there are multiple exams attached to an owner (and at least one of them is deleted)
Examination -- delete from exams
 - avoid iterator modification exception when there are multiple exams attached to an owner (and at least one of them is deleted)

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