Manori Ravindran International EditorMagnolia Pictures has snapped up the North American rights to a Martin Scorsese executive-produced documentary about New York’s historic Chelsea Hotel.Amélie van Elmbt and Maya Duverdier’s “Dreaming Walls,” about the Manhattan institution and its controversial renovation, world premiered in the Panorama section of the Berlinale in February. Magnolia plans to release the film in theaters and on-demand this summer.The Chelsea Hotel, an icon of 1960s counterculture, was a haven for famous artists and intellectuals including Patti Smith, Janis Joplin and the superstars of Warhol’s Factory.