Add ifname to netmap graph

Clicking on at link in netmap generates a textbox including interface names (Gi2/1/9, Te1/5/3 and so on).
It would be nice to include the ifName information directly on the map indicating interface in both ends
to generate topology maps to be printed. The information is already there.
It must be possible to toggle this on/of not to overload map all time in large networks.