The NHL has released the playoff schedule for the first round, and they’ve managed to schedule a smooth series with none of the back-to-backs we were worried about for the Preds. Here’s what the first round looks like: Game 1: @ Vancouver — Sunday April 21, 9 PM Central Game 2: @ Vancouver — Tuesday April 23, 9 PM Central Game 3: @ Nashville — Friday April 26, 6:30 PM Central Game 4…