AUI-1165 Node Checkpoints Module 

Hey Nate. I didn't want to bog down Jon with more reviews. So here you go instead haha. Just kidding. Actually, if you want me to send this one to Jon or Rob for a peer sanity check, Ilyian might be a good source of critique for this module, specifically. Although, he be looking for a unit test and curse at me when he realized I skipped those for now.