getJSON - does not report errors

google_store_locator.js should report AJAX and JSON errors.

Even if this is just logging them to the console:

 $.getJSON(url, function(json) {
        //defining our success handler, i.e. if the path we're passing to $.getJSON
        //is legit and returns a JSON file then this runs.

        // These will be either all stores, or those within the viewport.
        var parsedStores = that.parseStores_(json);
        that.setStoresCache(url, parsedStores);
        that.processParsedStores(parsedStores, bounds, features, callback, centerPoint);


        // THIS COULD ME MOVED TO 'always()'
        $("#cluster-loading").remove();
        //

      })
      .done(function() {
        console.log( "second success" );
      })
      .fail(function() {
        console.log( "error" );
      })
      .always(function() {
        console.log( "complete" );
      });