Refactored out UnknownUnityDeviceProfile.

Signed-off-by: Patrick Hogan <pbhogan@gmail.com>
Convert Lists to arrays in InputDeviceProfile.

Signed-off-by: Patrick Hogan <pbhogan@gmail.com>
InputManager.ActiveDevice returns a "NullObject".

Signed-off-by: Patrick Hogan <pbhogan@gmail.com>