AMSTERDAM — British retailer Marks & Spencer has unveiled its latest concept store, bringing its “clicks and bricks” strategy to the Dutch capital after a 10-year absence from the country. The 5,000-sq.-ft., women’s clothing-focused store includes features like a “virtual rail,” which it calls the first of its kind. The rail is a display that integrates physical rails of clothing samples with digital rails, consisting of three 46-in.