Families moved between rows of vendor booths along the Hercules waterfront Sunday, stopping for food, jewelry, paintings, toys and plants as children played nearby and dance and martial arts groups performed at the fifth annual Bay Front Festival. While businesses filled the festival grounds, hundreds of runners started the day on the waterfront for the eighth annual Bay Front Run, which included 5K, a 10K, a one-mile run and children’s races. More than 380 runners joined the fundraiser to support …