Beauty Queen Ends The Depression -- Glamour comes to the weather forecast. Meet the world's most beautiful forecaster, 22-year-old Leila Williams -- Miss Britain of 1957. She begins work with the British Commercial Television Network on Saturday. But she won't talk about depressions and anti-cyclones. She said yesterday: "I'll give the weather in homely language. such as 'I' d stay at home today if I were you -- It's going to pour all day'." There won't be any weather maps and ***** viewers will