geojson add & JS add of Milwaukee

Need to validate mapSize & Zillow use
house cleaning
Update public/js/data.js

Updated optDataFile to link to geojson for Milwaukee
Update public/js/data.js

Updated URL and Name in Milwaukee to represent where I got the goods
Pushed new geojson file

Lat/Long spits out weird when doing shx/dbf/shp disco. Moved to a kml
export (a la http://ogre.adc4gis.com/) and it _looks_ proper
Clean up the milwaukee geojson file and adjust the mapSize in public/js/data.js so you can see all the neighbordhoods.
Add a passable image file for milwaukee, wi.
Add Milwaukee.