Add the ability to communicate with the ban manager

This adds a procedure to send requests to the the ban manager and uses this procedure to store the players universally unique identifier into the ban manager when they log in.

Storing the players UUID is in preparation for minecraft eventually supporting name changes.

This requires a file called 'key.txt' to be placed inside the finalscore scripts folder, and the CHCrypto extension ([Found here](https://github.com/chocklymon/CHCrypto)) (both of which have already been uploaded to the server).