Fixed IP addresses for vboxnet addresses

the 0450* file was duplicate of the 0550 information,
apparently before the English was editted.  It was not
included in the build but was still in the source so
it's deleted.

Also added a couple links to the main docs and fixed
some awkward prose.

Change-Id: I9b999107024e48276f29b137c139beeca5698858
Closes-Bug:1380840
Merge "Fixed IP addresses for vboxnet addresses"