Nathalie Morris stars in the imported Australian series “Bump” (CW, 8 p.m.) about an ambitious teen who suddenly has a surprise baby. Claudia Karvan and Angus Simpson round out the cast. It accompanies the second season of the “Great Chocolate Showdown” (CW, 9 p.m.) reality baking competition. After “Alone: The Skills Challenge” (History, 10:03, 10:34 […]