plugin XEP-0045: added a warning if a message is discarded because the room has not been found

sat/plugins/plugin_xep_0045.py

@@ -1221,6 +1221,8 @@ class SatMUCClient(muc.MUCClient):
         room, user = self._getRoomUser(message)
 
         if room is None:
+            log.warning(u"No room found for message: {message}"
+                        .format(message=message.toElement().toXml()))
             return
 
         if message.subject is not None: