KINGSTON, Jamaica — Praises flowed for Agent Sasco Sunday night as the dancehall artiste celebrated 25 years in music with his sold out Grateful concert at the UWI Mona Bowl. A downpour was not enough to discourage fans from turning out to give Sasco the proverbial flowers for his contribution to the entertainment industry. The night had all the elements of a quality production — good music, vibrant stage presence…