Embed attachment links into minecraft chat. (broken for now)

This is broken by design because the bridge's message masquerading
deletes the original image and this the link 404s by the time it is
posted in chat. I will need to figure out a workaround before merging
this.

webhook-bridge.py

@@ -627,12 +627,20 @@ def main():
                             message.clean_content.encode('utf-8').decode('ascii', 'replace')).strip()
                         message_to_discord = escape_markdown(message.clean_content)
 
+                        if len(message.attachments) > 0:
+                            for attach in message.attachments:
+                                message_to_send = "{} {}".format(message_to_send, attach.url)
+                                message_to_discord = "{} {}".format(message_to_discord, attach.url)
+
                         total_len = padding + len(message_to_send)
                         if total_len > 256:
                             message_to_send = message_to_send[:(256 - padding)]
                             message_to_discord = message_to_discord[:(256 - padding)]
                         elif len(message_to_send) <= 0:
-                            return
+                            if len(message.attachments) > 0:
+                                pass
+                            else:
+                                return
 
                         session = database_session.get_session()
                         channels = session.query(DiscordChannel).all()