Extended RunDoctestsScript to autoimport scoremanager package. Docs note.

NOTE: I assumed this would suffice ...

    globs.update(importlib.import_module('scoremanager').__dict__)

... to make doctest know that the scoremanager package should be treated as
top-level.

But this actually doesn't work.

QUESTION: What else needs to be done so that 'ajv doctest' will know about
scoremanager the same way that it knows about the mainline and experimental
directories?
Commented out scoremanager from experimental initializers. DOC NOTE.

This commit comments out two lines.

But running 'ajv doctest' in scoremanager now fails on all tests.

The reason is clear: doctest doesn't know to import scoremanager before
running.

Any help would be appreciated. I'm committing even though all of the
scoremanager doctests now fail because (1) all other tests everywhere in the
system pass, and (2) this has to be a straightforward change somewhere.