Replaces long url by short url.
Takes item ID from the long URL and changes URL in address bar and history by replaceState().
From https://www.ebay.com/itm/NEW-Kids-HUNTER-Original-Kids-Gloss-Rain-boots-Green-Sz-US-4M-5F/401141972654?hash=item5d65ecbeae:g:SVoAAOSwmtJXbC~l
To https://www.ebay.com/itm/401141972654
