Add CorpContact.nation for nationality

stages/migrations/0032_contact_nationalite.py

@@ -0,0 +1,16 @@
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('stages', '0031_remove_contact_ccp'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='corpcontact',
+            name='nation',
+            field=models.CharField(blank=True, max_length=40, verbose_name='Nationalité'),
+        ),
+    ]