BEAVERTONOn a night when it seemed like the entire town showed up early to honor Roy Johnston in his final home game coaching the Beaverton boys’ basketball team, the opening act proved to be quite a show as well.The Beaverton girls’ team took the court first and absolutely lit up rival Gladwin in a 62-26 victory that tore the Cedar Cup away from the grip of the Flying G’s.“On a night full of…