“The tale of ‘The Wall’ spans more than a third of a century, 10 years of it in litigation, in which the outdoor art installation went up in SoHo, came down in SoHo — and stayed down. But its reputation only grew as the artist, the artwork’s landlords, neighborhood activists and, of course, lawyers, clashed. … But yesterday, the conflict seemed about to end, not with a bang, but with applause.”