(BBBY, STZ, RT) Thursday: Retail SSS, Treasury's Monthly Budget Statement, BOE rate decision, ECB monthly report, BOJ minutes, China CPUPPI March, Citi Diamond & Jewelry Conference (NYC), Earnings (FDO, PIR) Friday: PPI, Michigan Confidence, Earnings (JPM, FAST, WFC) Key Events on the Horizon Apr 16 — Yellen speaks at Economi