better reload on 3DSecure auth failure

rowers/templates/braintreedropin.html

@@ -42,7 +42,16 @@
         // payment method if liablity was not shifted
   instance.clearSelectedPaymentMethod();
   paymenterrordiv.innerHTML = '<p class="message">3D Secure Card Verification Error. Please check your card details.</p>';
+  var xhr = new XMLHttpRequest();
+  console.log('preparing message');
+  xhr.open('GET','/rowers/errormessage/3dsecure/');
+  console.log('sending message');
+  xhr.send();
+  console.log('message sent');
+  xhr.onreadystatechange = function() {
+  console.log('reloading');
   window.location.reload();
+  };
       }
   });