Add error handling to geocode reverse lookup with mapquest.
Add error handling to geocode reverse lookup with mapquest.

alicoding/webmaker.org,cadecairos/webmaker.org,mmmavis/webmaker.org,alicoding/webmaker.org,cadecairos/webmaker.org,mmmavis/webmaker.org,mozilla/webmaker.org,mozilla/webmaker.org,jbuck/webmaker.org