lab1p2 init

copying in from publicadnan/python/scraping-lab
lab1p1 commit: all tests passing, speed improvement

reduced duration from ~30min to ~1.5min:
* converted code to delete already compared sites from comparisson loop instead of actively tracking them
* previous code was slow because of initial method used to track each site by
  pushing already compared sites into a list and then performing a check against that list
  for each new site to be compared. This started taking longer and longer as the tracking-list got larger
  the tracking list was initally implemented to avoid comparing the same list more than once