KINGSTON, Jamaica — Music executive Maxine Stowe is heading up a movement to push a month of activities to highlight the potency, cultural pull and international relevance of the dancehall genre. The activities will be anchored by a high-energy sound clash showcase celebrating 40 years of its history. “As an extension of Sugar Minott’s legacy, May is being promoted as Dancehall Month, and that is why we are defining the…