When a developer backs out of an apartment project in Hackensack’s growing downtown, finding a new one isn’t too hard. Legacy Development Group will go before the local planning board in the spring with an amended proposal for 359 Main Street in the New Jersey community, NorthJersey.com reported. If its plans are approved, the buildings at 359 Main Street and 375 Main Street will be razed to make way for Legacy’s project. The development, at