By Shashwat Chauhan and Bansari Mayur Kamdar (Reuters) -The UK’s export-oriented FTSE 100 climbed on Monday supported by a weaker pound as traders braced for the government’s fiscal statement later this week and with a stronger dollar weighing on the British currency. The FTSE 100 closed 0.9% higher, with Ocado Group up 14% and leading gains. “Ocado saw the largest drop in short interest in October, helping the stock extend recent gains,” said Victoria Scholar, head of investment at Interactive Investor. Shares of the online supermarket and technology group have surged this month after it ente…