enrollments minimal

This is the simplest thing that can possibly work to gather the data. Next, I'll be cleaning up some stuff, then committing enhancements to it.
These are definitely going to change over time.  Wondering how to best handle this.  Maybe we add an application version column just to be safe?  In the long run, I think we would likely have the core, constant application questions in one table and the application version specific stuff in separate tables?