Update v1.13b

- Added Ghosting & Rotation to the Random box tool
- Added a check to check if the starting weapon is valid
- Cleaned up some of the zombie code & made it so they'll make their way
no matter how far the players are (provided there's a valid path)
- Added a ready up percentage, so if more than 68% of players are ready
then start the game. (Feel free to change it to 75% for a higher
threshold.