By Jon Coen Existing on the outskirts of Kingston tucked into Bull Bay is a different kind of Jamaican paradise — far different than the over-sanitized, all-inclusive, get-your-hair-braided-but-don’t-go-outside-the-barbed-wire-compound, frozen drink resorts of the West Coast. It’s called Jamnesia — an idyllic rootsy and charmingly ramshackle beach enclave