Former Chula Vista Mayor Mary Casillas Salas had some pointed words for me last week. “I don’t think you paint Chula Vista in a positive light,” she said with characteristic bluntness. “I’m a paid subscriber to Voice of San Diego and I would like to see positive news reporting,” she said. “The community needs that. When they see all this bitterness and conflict, they don’t want to volunteer for things.” Public officials often say such things …