MOSCOW (Reuters) -A Moscow court on Tuesday declined to consider the latest appeal by U.S. reporter Evan Gershkovich against his pre-trial detention, nearly six months after his arrest on spying charges that he denies. The court's press service said the case was being sent back to a lower court, meaning that the 32-year-old Wall Street Journal reporter remains in Moscow's Lefortovo prison awaiting his trial, for which no date has been set. Gershkovich, a reporter for the Wall Street Journal, was