Fixed issue that the boxes won't load on clients some times

Added a configuration menu for the boxes
Fixed some networking issues
Added the functionality to save configuration for different maps
Added a help menu

Fixed lines beeing seen through walls
Commands work with and without capital letters now

Fixed third-person mode not working in vehicles.

Fixed some players beeing able to noclip into the boxes

Printing names when adding/removing player from a box works now.

Players cannot recieve any damage in a box by non-allowed players.

Initial commit