They've been going strong for 60 years but The Rolling Stones almost hit the skids early on after a series of violent gigs. A new biography tells how the band survived a string of dangerous incidents during their 1960s hysteria. On July 23, 1964, the group visited Blackpool to play for 7,000 fans. The band's road manager at the time, Ian Stewart, recalls: "We get into town and it's full of these ravers from Glasgow." After a rowdy first set, hundreds of fans tried to lay hands on the Stones in