FritzAHA getdevicelistinfos support

Get and decode the XML response to the getdevicelistinfos command on the Fritz!Box device.
As enhancement - the temperature sensor can be bound to a number item. 

I hope it's not too late to get this into openHAB 1.6 ... ;-)
I will change the wiki page soon to document the configuration enhancements neccessary to use the temperature binding.