authomatic: fix incorrect missing key

backend/src/appenlight/lib/request.py

@@ -108,7 +108,7 b' def get_authomatic(request):'
         # callback http://yourapp.com/social_auth/facebook
         'facebook': {
             'class_': oauth2.Facebook,
-            'consumer_key': settings.get('authomatic.pr.facebook.app_id', 'X'),
+            'consumer_key': settings.get('authomatic.pr.facebook.app_id', ''),
             'consumer_secret': settings.get('authomatic.pr.facebook.secret',
                                             ''),
             'scope': ['email'],