All Around Bustletown: Summer (Rotraut Susanne Berner)By: Rotraut Susanne Berner It's summer and that means flowers, picnics, thunderstorms, and bike rides. It's a busy time for construction workers, farmers, and house painters. Playgrounds are filled with kids and vacationers are boarding trains in droves. In the sky a pair of balloons drifts through every scene, while on the street people of all ages make their way to an outdoor birthday party. There's even a big storm that turns umbrellas inside out,