After deliberation on a 54-acre, 52-lot development in Edgartown, called Katama Meadows, went long on Thursday night, Martha’s Vineyard Commissioners pushed a final approval or denial until the following week for the second time in a row. And conditions on the proposed single-family housing project, which will be put on the developers to integrate into their plans if it is approved, are already some of the most substantial in Martha’s Vineyard C…