switch to Gmail SMTP, other minor tweaks

common.py

@@ -63,7 +63,7 @@ DOMAIN_BLOCKLIST = (
     'twitter.com',
 )
 
-SMTP_HOST = 'mail.gandi.net'
+SMTP_HOST = 'smtp.gmail.com'
 SMTP_PORT = 587
 
 # populated in models.reset_protocol_properties

models.py

@@ -372,7 +372,7 @@ class User(StringIdModel, metaclass=ProtocolUserMeta):
 
         add(self.enabled_protocols, to_proto.LABEL)
 
-        msg = f'Enabled {to_proto.LABEL} for {self.key} : {self.user_page_path()}'
+        msg = f'Enabled {to_proto.LABEL} for {self.key.id()} : {self.user_page_path()}'
         logger.info(msg)
         common.email_me(msg)
 
@@ -391,7 +391,7 @@ class User(StringIdModel, metaclass=ProtocolUserMeta):
 
         remove(self.enabled_protocols, to_proto.LABEL)
 
-        msg = f'Disabled {to_proto.LABEL} for {self.key} : {self.user_page_path()}'
+        msg = f'Disabled {to_proto.LABEL} for {self.key.id()} : {self.user_page_path()}'
         logger.info(msg)
         common.email_me(msg)
 

protocol.py

@@ -143,6 +143,7 @@ class Protocol:
             label = domain.removesuffix(common.SUPERDOMAIN)
             return PROTOCOLS.get(label)
 
+    # TODO: redesign this API to require user
     @classmethod
     def is_enabled_to(from_cls, to_cls, user=None):
         """Returns True if two protocols, and optionally a user, can be bridged.