April is Alcohol Awareness Month, which in Portland means it’s time for the annual Spring Beer & Wine Fest. Locals may notice something different about this year’s festival: a massive sign reminding onlookers that marijuana is safer than alcohol. MPP’s latest billboard, located at Southwest 13th and Alder Streets, features a glass of beer, a glass of wine, and a marijuana leaf below the words "Beer," "Wine," and "Safer." "Our goal is to make this year's beer and wine festivals as educational as…