Let’s face it: “The Lego Movie” is for anesthetized consumerist lemmings dumb enough to shell out $15 for a film clearly designed by nefarious corporations to capitalize on their childhood nostalgia. “The Lego Movie: Mumblecore Edition,” on the other hand, is about two hip twentysomething Lego-people having a deep philosophical discussion in their bedroom. And luckily for you, you won’t have to pay a dime to watch it. Because god knows that trust fund doesn’t pay nearly well enough.