This post by DCist Food contributor Analiese Bendorf Since their 2005 inceptions, 14th Street, NW establishments Café Saint-Ex and sister restaurant, Bar Pilar, both headed up by Chef Barton Seaver, have been serving up satisfying fare to Washingtonians hungry for a pre-Black Cat bite or low-key weekend brunch. Seaver, as Todd Kliman recently reported, is bidding farewell to Café Saint-Ex and Bar Pilar, but fans of the chef’s casual cooking will be able to get…