Oil prices extended a steep slide on Wednesday on the back of worries about weakening world demand and oversupply, while global shares sagged as energy sector strains heightened anxiety about a slow down in the global economy. Spreadbetters expected European stocks to open lower, with Britain’s FTSE .FTSE losing 0.4 percent, Germany’s DAX slipping 0.3 percent.GDAXI and France’s CAC .FCHI shedding 0.5 percent. U.S. West Texas Intermediate (WTI) crude futures dived 7 percent the previous day, suffering their biggest one-day loss in more than three years. The contracts last stood at $55.30 per barrel CLc1 for a loss of 0.7 percent, following a descent to a one-year low of $54.75 overnight. Brent crude LCOc1 was down 0.35 percent at $65.24 per barrel after tanking 6.8 […]