removed top border for the first picked item
separating best offers
supporting discounted list price by Amazon.com
1st imlementation
listening for scraping finished event in picker
listening for offers added event in controller
TODO: run scraping in the background
added description of push picked items additional offers to the browser
Merge branch 'feature/observer' into feature/scraping_for_more_offers
added test for listener/notification behaviour
added tests for notification upon item offers scraping finished