WIP: Implement frontend

src/Form/ChoiceLoader/BpnCountryChoiceLoader.php

@@ -28,7 +28,7 @@ class BpnCountryChoiceLoader implements ChoiceLoaderInterface
 
         foreach ($countries as $country) {
             $key = 'nationality' === $this->property ? $country->getNationality() : $country->getName();
-            $choices[$key] = $country->getId();
+            $choices[$key] = $country->getToken();
         }
 
         return new ArrayChoiceList($choices);