Detailed country data popup

This is not for merging yet, just for feedback, please.

### Existing issues: 
- ~~clicking on the same country twice will not rendet the popup the second time, but it does if you click on a different country and then back~~ fixed
- ~~something's up with the axis, it seems to start at 1... ?~~ fixed
- ~~the nvd3 stylesheet overrides the styles on the slider. in fact, onpageload the slides is half the size, after a refresh it becomes the right size, but the css is still off~~ fixed. css is stupid

### To Do:
- ~~Display country name at the top of the popup~~ done
- Fix the ticks on the x axis