Minor cleanup

Added Mathracer -- Thanks Noxx!

Updated Ghostly Apparition to support the Enhanced Medium haunting feature

- Updated Real Gun Game to remove levels when teamkilling (disabled by default) and when suiciding (enabled by default)
- Fixed Real Gun Game convars not using the right kind of controls in ULX

Fixed player chosen as Mr. President or Mr. Romero not having their role weapons updated

Updated Real Gun Game to select a random melee weapon (if there are any) rather than always using the crowbar

- Added temporary spawn protection for players during Real Gun Game
- Fixed minor typo in regeneration event title
- Fixed weapons that are added after a player starts ragdolling being visible in Bad Trip
- Changed Scouts Only to try to balance the teams rather than just moving all non-innocents to be traitors

- Added ability to limit the number of rounds in Real Gun Game
- Added ability to block certain weapons from Real Gun Game

Added Attacker and upcoming Inflictor property to Bullet structure for compatibility

- Fixed projectile weapons not counting kills correctly in Real Gun Game
- Fixed weapons with a max clip size not defined not getting any extra ammo in Real Gun Game
- Fixed players who die and are respawned during Scouts Only not getting a scout on respawn
- Fixed dead players not having the roles changed to be compliant during Scouts Only