ship settings to disable registration

(they were previously in settings.json)

debian/50gnm.py

@@ -1,2 +1,12 @@
+# disable local registration
+REGISTRATION_OPEN = False
+A2_EMAIL_IS_UNIQUE = False
+A2_AUTH_PASSWORD_ENABLE = True
+A2_REGISTRATION_CAN_CHANGE_PASSWORD = True
+A2_PROFILE_CAN_CHANGE_EMAIL = False
+A2_PROFILE_CAN_EDIT_PROFILE = False
+A2_CAN_RESET_PASSWORD = None
+A2_REGISTRATION_CAN_DELETE_ACCOUNT = False
+
 # set session age to the CUT "remember me" value
 SESSION_COOKIE_AGE = 3600 * 24 * 30