Added a link to the olsr-viz-lite instance running on the node to the guest user's desktop.
Also added an icon to /usr/share/pixmaps for this icon.

Signed-off-by: The Doctor <drwho@virtadpt.net>
I put the network.png file in the wrong place.  Oops.

Signed-off-by: The Doctor <drwho@virtadpt.net>
I hardcoded a path to the icon and it looks the way I want it to now.

Signed-off-by: The Doctor <drwho@virtadpt.net>