By Will Stewart & Tim Hanlon Vladimir Putin has revamped his £1billion clifftop palace, getting rid of his pole-dancing boudoir and installing a church with a “throne” for his personal use. The dictator, 71, was stung when investigative journalists discovered the gaudy Gelendzhik castle overlooking the Black Sea three years ago. Amid a scandal over misuse of state funds, the Kremlin claimed it belonged instead to his childhood friend Arkady Rotenburg, 72, who told reporters he was creating a sumptuous “apart-hotel”. But Putin-watchers saw this as a smokescreen and now a new leak appears to sho…