Saving Preference

Small change that will allow the game to save the players choice of heat display colours and for the grant/deny option to allow it to be saved in the config file.

I feel that with regards to the function comments needing parameter and return types that these should be done by whoever created them or someone that knows what they are.  I am only adding something that
allows the choice to be saved between games.

This was first in #98 - trying to squash the commits did not work for me 
@TheCycoONE: You still have the option to fire staff that ask for a pay rise.  All this does is save your chosen preference of what should happen if you ignore pay demands.  Other preferences can be saved, but can also be changed within a game.