web doc info page should best show all description files for that device on the same page

[LFSaw]

(splitting issue #263 into two)

When there are multiple desc files for a single device, the web doc info page should best
show all description files for that device on the same page, like this
Keith McMillen QuNexus

MKtl Description(s):
keith-mcmillen-qunexus_port1_AB
keith-mcmillen-qunexus_port1_C
keith-mcmillen-qunexus_port1_D
keith-mcmillen-qunexus_port2
keith-mcmillen-qunexus_port3