Raise the minimum score allowed

Raise the minimum score allowed:
- Increase the minimum score (or point floor) from 1 to 150 points
- Why it is needed: Currently if a player has 1 point, they can lose against an opponent with 41 points or higher and not lose any points. 1/41*20 = .488 which rounds down to zero
- Conversely, if the higher ranked player loses, they will always lose the maximum of 100 points, or reach the minimum score themselves
- It doesn't make sense to allow games where a player can't win anything, but can lose the maximum amount allowed. It happened to GoVegan in 1460017 and 1460020, and it could happen to you!
- Specifics: If the minimum score were changed to perhaps 150 points, everyone (until we reach a score of 6001) will be able to gain 1 point. 150/6001*20 = .49992 which rounds down to zero
- 150 points would then function like 1 point currently does: You cannot lose any more than that, but your opponent would still gain the normal points he/she deserves if they win. A few points are "created" to balance out the scores