Several bugfixes & improvements to stats

[Pablete1234]

Fixes a few issues with stats:

• Custom projectiles hitting players with resistance would cause negative damage to be recorded
  • Extreme cases (resistance level 255 and rage projectiles) could cause damages in the -300k range per projectile
• Bow shots and bow lands were tracking differently, causing mismatches like:
  • Shooting a custom projectile that launches an arrow (eg: La Piazza's crossbow) would increase your landed shots but not your "shot" arrows, meaning you could get 100% bow accuracy.
  • Shooting a bow that modifies the projectile (eg: Glacial impact shooting snowballs) would increase your shots but would never count towards landed projectiles, meaning your accuracy would drop even if you land your projectiles.
• The stats menu now supports FFA, prior to this it wouldn't give you the item at all.
• The stats menu was not centered for a bunch of team sizes (it really only worked well for even amounts), so 3-team or 5-team maps would be off-centered. Now they all display in a more reasonable manner.
• The stats menu always reserved just 2 rows for teams, now it will be flexible from 2 to 4 rows depending on how many teams there are. This applies to FFA too.