Add country field in registration

Signed-off-by: Emmy D'Anello <emmy.danello@animath.fr>

registration/models.py

@@ -183,6 +183,12 @@ class ParticipantRegistration(Registration):
         verbose_name=_("city"),
     )
 
+    country = models.CharField(
+        max_length=255,
+        verbose_name=_("country"),
+        default="France",
+    )
+
     phone_number = PhoneNumberField(
         verbose_name=_("phone number"),
         blank=True,