With its historic buildings and working farm, the Sabbathday Lake Shaker Village in New Gloucester, Maine draws thousands of visitors a year. This is the last active Shaker community in the United States. And until a few months ago, there were only two members. Now a third has joined the celibate Christian sect. 59-year-old Sister April Baxter is unassuming in her colorful button down and jeans but has brought a palpable energy to the space. Baxter is the newest Shaker. She came to live at the v