Remove unneeded code
Add a TODO message
Add tests
Rename TestLogic.cs -> TestManager.cs
Update tests
Add notes on immutability, remove immutablity tests
Smarter Manager.RegisterClassRoomTimeSlot

It now checks if there is any other class using the room in the same
time slot.
Clear Main, using unit testing instead
Project settings
Simple data persistence
Convert newline ending for TestIdentity.cs
Introduce Identity class
Overload Identity's Equals method and add tests
Rename a test case
Add test for XML Collection deserialization
Add load method to XMLDatabase
Project settings
Merge pull request #2 from lewtds-forks/dev

Introduce unit testing