LAS VEGAS — Justice hasn’t always been swift in Nevada, which until last week’s election was one of 10 states in the nation without an intermediate court of appeals. That meant that every appeal from each of the state’s 82 district courts — death penalty convictions, medical-malpractice judgments, prison food complaints, administrative hearing reviews, driver’s license revocations — had to be heard by a very busy seven-member Nevada Supreme Court. After three earlier …