Three sisters are connected only by gloom -- 2.5 stars for Steppenwolf's take on Chekhov
A model facade of a lovely house — lights burning brightly in the little windows but located, alas, in a dull provincial town — now hangs high over the Steppenwolf Theatre stage. For anyone who saw "August: Osage County," the last great collaboration between the remarkable Chicago trio of writer Tracy Letts, scenic designer Todd Rosenthal and director Anna D. Shapiro, the looming sight of such a domestic …