Actress and writer Anna Vocino wears many hats. She’s appeared in side roles on shows like “It’s Always Sunny in Philadelphia” and “The Office,” and has done voice-over work for numerous cartoons and video games. She’s also a passionate food writer, and blogs about her struggle with celiac disease. Her new book, “Eat Happy,” explores the ways to eat gluten-free, and have it taste good, too. We talk to her ahead of a book signing this Saturday, May 6. Thinking of getting a new credit card or