mod_http_muc_log: Move language attribute onto body itself One could argue that it's mostly the message that is in a particular language, while the timestamp is less so. What language a particular nickname is, and its relation to the language in the text, that is an unresolved question.

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.