As Barnes & Noble ceo Ron Boire first announced in Thursday’s investor call, Nook UK will shut down on March 15, and customers are being are transferred to Sainsbury’s Entertainment on Demand. Nook explained the transitions to customers online. The same date is when Nook told customers they will stop selling apps (though they are having a final sale until then). The company’s stock rallied Thursday on decent earnings and the continued reduction of Nook — though it’s still below where it was until before the previous quarter’s report. And while the company’s account of the “lowest number of store closings […]