British comedy superstar Ricky Gervais has signed a teddy bear and left it somewhere in the Austrian capital Vienna for fans to find. British comedian Ricky Gervais poses with a teddy bear. He had hidden the bear in St. Stephen's Cathedral in Vienna. (@rickygervais/CEN) The comedy legend, who is known for creating and starring in hit TV shows The Office and After Life, as well as hosting the Golden Globes…