The guitarist of Jagweed performs at Rocktoberfest Thursday night in Lowell. (Christina Laderoute/Connector) Kathryn Leeber Connector Staff Halloween weekend was off to a great start Thursday night at UnchARTed with three amazing live performances. UMass Lowell’s Music Entertainment Industry Student Association (MEISA) hosted Rocktoberfest which featured local bands Bicycle Inn, Jagweed and MILES. The event took…