SINGAPORE (Reuters) - Oil prices edged lower on Friday after U.S. inventory data showed lacklustre fuel demand in the world's largest oil consumer while worsening U.S.-China tensions weighed on global financial markets.Brent crude slipped 36 cents, or 1%, to $34.93 a barrel by 0106 GMT and U.S. West Texas Intermediate crude was at $33.20 a barrel, down 51 cents, or 1.5%. Still, both contracts are set for a fifth weekly gain, helped by production cuts and optimism about demand recovery in other..