Moved Domain.Infrastructure to separate library.
Split domain's FailureMessages.
Fixed broken tests due to lack of Id mock.
Removed unused code from Id classes.
Removed empty folder.
Removed unused distance from Lift.
Renamed Lift.EqualsByPerson to IsForPerson. Clarified mesages to use 'lift for person' instead of 'lift with person'.
Extracted 'journey contains lift for person' to separate method.