add VSS checkbox on registration

apps/member/tests/test_memberships.py

@@ -335,6 +335,7 @@ class TestMemberships(TestCase):
             ml_sports_registration=True,
             ml_art_registration=True,
             report_frequency=7,
+            VSS_charter_read=True
         ))
         self.assertRedirects(response, self.user.profile.get_absolute_url(), 302, 200)
         self.assertTrue(User.objects.filter(username="toto changed").exists())