Add Team functions

Core/Entities/PartialTeam.cs

@@ -8,6 +8,6 @@ public class PartialTeam : Team
 	{
 		var remainingStudents = Students.Where(s => !studentsToOmit.Contains(s)).ToList();
 		var omittedStudents = OmittedStudents.Union(Students.Where(studentsToOmit.Contains)).Distinct().ToList();
-		return new PartialTeam{TeamId = Name, Event = Event, Students = remainingStudents, OmittedStudents = omittedStudents };
+		return new PartialTeam{TeamId = TeamId, Event = Event, Students = remainingStudents, OmittedStudents = omittedStudents };
 	}
 }