NEW YORK (Reuters) - The dollar edged higher on Wednesday, adding to the previous session's gains, as safe-haven currencies remained largely well supported even as markets began to stabilize and oil prices recovered from another slump.The U.S. Dollar Currency Index, which measures the greenback’s strength against six other major currencies, was 0.19% higher at 100.39. The index hit a two-week high of 100.50 earlier in the session.Brent crude oil rebounded from two days of losses and U.S...