added method 	public static Roles getRole(String roleRef)
added method
	public static Roles getRole(String roleRef)

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