A federal judge cleared the way for a husband and wife to pursue defamation claims against a caterer who accused them of failing to pay the full bill for her services at their wedding reception.In a written opinion Tuesday, U.S. District Judge John Z. Lee did not rule on the merits of the contention that statements Nikita Collins Jackson made on Facebook and YouTube about Patricia and Reginald Fields were false and defamatory and harmed their reputations.But Lee held the Fieldses are entitled to go forward with their …