Continuing 's good work. Probably involves making a WIP PR to test this out. Do not need to merge this PR as part of this story (though it would be nice).
Things we'd have to try out:
Removing all the references to XMLModulestore
Refactoring the import/export piece
Set of stories that would represent the actual work for killing the non-import/export related part of XMLModuleStore, and doing the rename.
Wiki page with plan