New way of calculating # of DAs

Instead of modifying the coefficient, it just straight up adds additional antagonists, so we can have more of them without letting them get out of control in high-pop rounds.

![graph_20140927_185800](https://cloud.githubusercontent.com/assets/3828067/4432631/625a4056-46a3-11e4-93f0-03e379fd69a0.jpg)