Better Mission/Plot Admin Page

Sliced bread, it's time to meet your reckoning.

Now you can filter missions by game and set a mission's victor or visibility from the mission list!
![mission-list](https://f.cloud.github.com/assets/887446/246686/b77e6df2-8aaa-11e2-9bc3-994ace81108a.png)

You can also define plots inline with missions!
![plot-inlines](https://f.cloud.github.com/assets/887446/246688/ba4e169a-8aaa-11e2-9fcf-d39b9035bf24.png)