fitbounds change also center

frontend-js/src/test/js/google-map-mock.js

@@ -80,6 +80,9 @@ var google = {
         getNorthEast : function() {
           return data.ne;
         },
+        getCenter : function() {
+          return new google.maps.LatLng((data.ne.lat() + data.sw.lat()) / 2, (data.ne.lng() + data.sw.lng()) / 2);
+        },
         isEmpty : function() {
           return data.ne === data.sw || (data.ne.lat() === data.sw.lat() && data.ne.lng() === data.sw.lng());
         },
@@ -206,6 +209,7 @@ var google = {
         },
         fitBounds : function(bounds) {
           this.setBounds(bounds);
+          this.setCenter(bounds.getCenter());
         },
       };
     },