Submissions

Does this mean we will lose student submissions from previous work, or does submission try the regular StudentModule state as well?  If so, is there anyway to set this up so that we try submission and then fall back to the old method?  I know it means we keep carrying around a lot of extra code, and I'm not sure we have to keep old one grades around, but it may matter to people out in the community (or us).  What do you think @pdpinch ?