DerbyTournament.GenerateMatch() creates bad state when only 3 MOCs are in round

[Jameson42]

When only 3 MOCs are in a round, DerbyTournament.GenerateMatch() will only put MOCs in the first 3 lanes for the first 3 rounds, which leads to 3 matches of 1 MOC each in the 4th lane.

When the MOC count for the round is less than MatchSize, "Bye" MOCs should be added until the MOC count is MatchSize.

[Jameson42]

Only bad state is when 3 MOCs are in round... better solution would be to just add the "bye" user if there are exactly 3 non-bye MOCs in the round.