Overall sales jump doubles expectations, calms consumer spending fears
                                
                                
                                    (Newser) -
                                    Big retailers showed unexpected signs of life in February, beating weak sales predictions to inject some hope into the market. Wal-Mart led the way, posting a 2.6% same-store increase, beating its own predictions of flat-to-2% growth. Overall, same-store sales climbed 1.9%, with more than half of retailers beating...