Thousands of Montreal Canadiens fans celebrated their team’s first Stanley Cup Finals berth since 1993 by flipping police cars, lighting fireworks, and tussling with officers outside the city’s Bell Centre arena after Thursday night’s Game 6 win over Vegas. Montreal police say 15 people were arrested, 60 tickets were given, and two officers were injured, according to . Ultimately police dispersed the crowd using tear gas, but not until after eight police cars were damaged and fans were apprehended for…