If there’s one thing New York really doesn’t need, particularly amid a sharp downturn in the market, it’s another art fair. Or so you might have thought. Undeterred by the city’s already crowded marketplace, an Estonian gallerist duo decided to make their mark on the New York scene this year – with a touch of distinctive Baltic flair. Running alongside the Frieze frenzy, the Alternative art fair Esther invited collectors, dealers and art lovers to experience the architecture and history of Manhattan’s Estonian House, so named for its role as cultural centre for the diaspora Estonians who left …