separate translate & post_proc calls
use Hpricot (thanks, _why!) for parsing results

Got rid of previous slowness when phantom was asked for every element,
giving it back ca. 150-300ms each. Because tr/td elements were processed
in a loop, it was really sluggish.

Now overall time of command line run dropped from 5-10s to 3-5s,
which is much more pleasant experience.

Eg. on my old thinkpad running 'gogoltr cook' total time median
dropped from 6.7s to 4.5s when there were lingering phantomjs processes
(so the driver was looking for other ports to use), then
from 5.6s to 3.2s with "clean" phantomjs situation.