On the last night of their UK tour, Bastille put on a future-focused show in front of a sold-out crowd, but just how many got the message? — I first saw a fledgling Bastille in October 2012, when they played Brighton’s Komedia and again a few months later when they played Brighton’s new music festival, The Great Escape in May 2013. Back then, they were one of the headline acts and as such got to play the Brighton…