Port geocoder to V3 of the API

Here is a patch to upgrade the geocoder api from v2 to v3 for the current 7.x-2.2 version.

--- locationmap.module	2012-08-10 20:48:08.000000000 +0100
+++ locationmap.module	2014-01-20 10:15:06.000000000 +0100
@@ -289,31 +291,32 @@
  * @returns FALSE if address not found
  */
 function locationmap_geocode_for_address($address) {
 
   $url_options = array(
     'query' => array(
-      'q' => $address,
-      'output' => 'csv',
+      'sensor' => 'false',
+      'address' => $address
     ),
   );
 
   $options = array(
     'max_redirects' => 10,
     'timeout' => 120, 
   );
 
-  $response = drupal_http_request(url('http://maps.google.com/maps/geo', $url_options), $options);
-
+  $response = drupal_http_request(url('http://maps.googleapis.com/maps/api/geocode/json', $url_options), $options);
+  
   if ($response->code != 200) {
     return FALSE;
   }
 
-  // data looks like: 200,5,51.4793862,-2.5729730  
-  $data = explode(',', $response->data);
-  return array($data[2], $data[3]);
+  // data is json response: https://developers.google.com/maps/documentation/geocoding/#GeocodingResponses
+  $data = json_decode($response->data);
+  $location = $data->results[0]->geometry->location;
+  return array($location->lat, $location->lng);
 }
 
 /**
  * Try to get lat and lng information from address removing parts of address if not found.
  */
 function locationmap_geocode_for_address_recursive($address) {