Added a textual summery for communities

Hey, this PR has the changes that @rnagle and @andymboyle started earlier today and I finished tweaking. 

It adds a summery page so you can get the beginning of a writeup for crime in a community in a month. For example

```
Summery of January
In West Town, Chicago for the month of January 347 crimes were reported, a -48.99% decrease compared to the same month last year, which had 517 reported crimes.

47 violent crimes were reported a 0.00% decrease compared to the same month last year.

232 property crimes were reported a -39.22% decrease compared to the same month last year.

68 quality-of-life crimes were reported a -116.18% decrease compared to the same month last year.

There were no arson crimes reported this month.

This information is gathered from the City of Chicago data portal and calculated by the Chicago Tribune.
```

Still a bit rough, but the whole repo is a bit rough so should be fine. 

I might make another PR later with some refactoring, this app doesn't really fit backbone design patterns, and so it behaves a little weird. 

Thanks again for the hackathon, it was a lot of fun.