mod_muc_bot: Save occupant to room This has some side-effects: Firstly, the bot shows up in occupant list, which is nice. Secondly, the bot starts receiving messages from the room which might be wanted, but it would be better to join the room for real in this case.

This module produces more detailed HTTP logs for Prosodys built-in HTTP
server. The format is similar to that of Apache and go into Prosodys
normal logs at the `info` level.