Labor Camp

Adds a labor camp to security, this time with feeling.
Maybe now the mining will get done.

Station:
![station](https://f.cloud.github.com/assets/4391822/1459792/27de18b6-43f8-11e3-8c73-1b40e3ee196c.png)

Camp:
![camp](https://f.cloud.github.com/assets/4391822/1459793/2f657458-43f8-11e3-996e-5092e0e0ae3e.png)