Saturday morning cartoons, preferably accompanied by a giant bowl of sugary cereal, are largely a thing of the past. But federal educational/informational programming mandates remain (for broadcast networks, anyway), which is probably at least partially why The CW is launching a new block of family educational programming called “One Magnificent Morning.” The new programming block will consist of 10 live-action shows that will air on Saturday mornings between 7 a.m. and noon, including a “family edition” of Dog Whisperer With Cesar Millan that will exclude the graphic nudity and drug content that has so polarized the Dog Whisperer community.