By Daniel Bates All signs were pointing towards Marcus Smart’s return heading into Saturday, and now it’s confirmed. Per longtime NBA writer Marc Stein, “The Celtics say Marcus Smart is available to play today against Milwaukee.” Smart was held out of Game 2 after reaggravating a right quad contusion in the first game of the series. On consecutive sequences in the third quarter of Game 1, Smart took shots to that area of his leg, creating swelling that really limited his mobility. Now, however, it appears the Defensive Player of the Year is healed enough to five it a go in a pivotal Game 3 aga…