adding self.db._dumps() also to the _add_to_db function, but not sure if this is needed

LogBot/logbot.py

@@ -127,6 +127,7 @@ class Logbot(Bot):
         else:
             replaced = message.content.replace("@add", "")
             self.db[message.room]["messages"][new_key] = replaced
+        self.db._dumps()
 
     def _parse_room_name(self, room):
         """Parse room name from entire address string."""