(Reuters) - 1/GIVE NO QUARTERFew will regret the end of the first 2020 quarter. Fears of a U.S.-Iran war gave way to the coronavirus pandemic which JPMorgan reckons will have pushed the world economy into a 12% contraction over January to March. The quarter saw the most brutal global equity collapse since the Great Depression, exacerbated by a 60% oil price slump.April may not bring much relief, with coronavirus still spreading rapidly and keeping large parts of the global economy shuttered...