Introduce 'Point' class

The Mapper class now draws instances of the Point class. Each Point instance has a latitude, longitude, color, and symbol.
Update vpnrc.sh to use jails and forwarded ports

This commit updates vpnrc.sh to start transmission in a jail. After
transmission is started, the script will contact the vpn provider for
a forwarded port and then update the running instance of transmission
to use that port.