delete group and specialty
Merge branch 'master' of https://github.com/putay/DepartmentOfLoad

Conflicts:
	Department of load/Department of load/db/db.mdb
Кафедра
added deleting from groups and timestudy
added change listener for timestudy
Кафедра - готово
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Исправил ошибки удаления
Распределения в комиссия�