Add default email settings

These are the django default settings.

cms/envs/common.py

@@ -197,6 +197,11 @@ IGNORABLE_404_ENDS = ('favicon.ico')
 
 # Email
 EMAIL_BACKEND = 'django.core.mail.backends.console.EmailBackend'
+EMAIL_HOST = 'localhost'
+EMAIL_PORT = 25
+EMAIL_USE_TLS = False
+EMAIL_HOST_USER = ''
+EMAIL_HOST_PASSWORD = ''
 DEFAULT_FROM_EMAIL = 'registration@example.com'
 DEFAULT_FEEDBACK_EMAIL = 'feedback@example.com'
 SERVER_EMAIL = 'devops@example.com'