Return Theater recording for all game modes.

One of the many things that bugged me about Halo 4 was the fact that there was no theater mode for Spartan Ops or Campaign. There were tons of great moments that players who like to take funny screen shots and videos missed out on because Halo 4 only supported theater mode for MP. It was annoying. I would like to see theater mode able to record footage from ALL game mode, not just multiplayer.