mod_muc_badge: If room has no title use localpart of room's jid (fixes #1767) Without this patch Prosody shows an HTTP 500 error (Lua 5.1) or a "nil" label in the SVG badge (Lua 5.2) if room has no title set.

-- this module is deprecated, log an error and load the superseding module instead
module:depends"smacks"

module:log("error", "mod_smacks_offline is deprecated! Just use mod_smacks!");