WIP module 3

tried redoing servicestack install to an earlier version but 3.9.7
thinks it's dependent on 4.+ (that may be servicestack devs being stupid
and frgetting about backward compatibility and breaking changes, or
servicestack suits being protectionist, and hobbling the free version to
frce poeple up to the commercial 4.+)

got bogged down with surprise dependencies on CORS before getting
anything to work.
fix merge conflicts