Switched to nominatim for geocoding. Added a simple test page to try out new geocoder.
Merge pull request #6 from emartinez-usgs/geocoder

Switched to nominatim for geocoding. Added a simple test page to try out...
Changed from mapquest to mapquest/nominatim,  added comuputeZoomFromGeocode
fixed white space
pulled commented out code
Changed zoom levels,  refactored geocde to be object not array of objects.
Merge pull request #7 from hasimpson-usgs/EQH-2624-confidence-calculator

Eqh 2624 confidence calculator