Merge pull request 'Hotfix: EcoAccount serializable' (#361) from 360_EcoAccount_not_serializable into django_4

Reviewed-on: SGD-Nord/konova#361

compensation/autocomplete/eco_account.py

@@ -32,3 +32,9 @@ class EcoAccountAutocomplete(Select2QuerySetView):
                 Q(title__icontains=self.q)
             ).distinct()
         return qs
+
+    def get_result_label(self, result):
+        return str(result)
+
+    def get_selected_result_label(self, result):
+        return str(result)