Add nmsBox-possibilities to nms-map-handler data

[KristianLyng]

The data-array should keep returning plain-text, but it should also be possible to provide a richer feedback by also adding an optional nmsBox. A couple of obvious examples are re-implementing the "Links"-pane as a "map-handler", and adding links to the network(s)/distro, etc.

In fact, it might make more sense to use nmsType than nmsBox....