Random names courtesy of the US census

NPCs now have random names that you can see by looking at them! The
names come from the US census, helpfully sorted by frequency by Deron
Meranda (http://deron.meranda.us).

I've also realised random.choice is a really cool thing and I could have
saved a lot of typing where I used random.randint to get a random
index. Oh well, I'll fix those later. Next, random descriptions, and
maybe name obscuring until you talk to the target NPC (if not a police officer)