[ARAM] Wasting Re-Rolls for 4v5 matchs

It just happened to me again, that I wasted two rerolls in order to play a game in the end that was decided before it even started. We played 4v5 most of the time and 3v5 for some time.

To me it would be fair and I guess it is also technically rather easy to implement, that for such uneven matchs at least the losing team should get their reroll points refunded. The losing team have already been penalized enough through the game.