MANCHESTER, England (AP) — Andy Burnham , Britain’s presumptive next prime minister, will set out details on Monday to give more powers to local government as part of a plan to spread wealth and economic growth. Burnham will set out a sweeping economic vision in a key speech as he tries to bring voters, colleagues and financial markets up to speed with his ideas during his rapid progress toward power. His office says Burnham will set out a 10-year vision for “good growth in every postcode,” in