mod_muc_mam: Honour 'archive_expires_after' if 'muc_log_expires_after' not set (thanks balejk) This allows for a more consistent setup, by setting archive_expires_after once in the global section.

module:log("error", "mod_pep_plus has been renamed to mod_pep, please update your config file. Auto-loading mod_pep...");
module:depends("pep");