Replaced distribution map with carousel, integrated overlay

As the title says. Changed base.html to stop Smooth Scroll from interfering with the carousel scroll. Carousel seems to be completely responsive to changing the size of the window.

![carousel](https://cloud.githubusercontent.com/assets/6364266/3112179/5a63ca44-e6bc-11e3-8fe1-e6c4779ce7c2.png)