Add CrimeDBLayer to L to conform to what other LefaletJS plugins do
Load leaflet.css via absolute path rather than relative
Add map to homepage; remove links to regions
Import github.com/millermedeiros/requirejs-plugins
Add location lookup to homepage.

- Add a text area and button to look up a location using the Google Maps
  API. Use that location to center the map.
- This is really fragile and lame -- no error reporting, pick the first
  result, etc.
Add /faq
Add GA event for clicking the 'Go' button

- Add a Google Analytics event for using the map location geocoding
  button. Not sure how well this is going to work, but add it for now
  and we'll see what shows up in the analytics data later.