Ingame finances, new music/sound effects

- Added EFTPOS scanners, ATMs and account databases to the map. 
- Player characters have an account automatically created for them with a random amount of starting money. 
- Money can be transferred between accounts or withdrawn/deposited at ATMs, and charged to accounts via the EFTPOS scanners. 
- New EFTPOS scanners can be ordered at the cargo bay. 
- Maintaining accounts / financial well being of the station is the HoP's responsibility. 
- Turrets make noise now, when they do stuff. 
- Bunch of new roundstart music (too much, needs to be cut down) see http://baystation12.net/forums/viewtopic.php?f=5&t=6972