This is the first step in the process of turning our outline into a
presentation.  The https://code.librehq.com/ots/oss-goals-field-guide
repository has an already-finished related presentation, so we're
merging it in, to get a bunch of presentation infrastructure, and then
will trim and modify from there.  This is intended to be a permanent
divergence; these changes are not expected to go back into the
'oss-goals-field-guide' repository.  We might some day try to make a
separate OTS generic presentation baseline repository, that we then
branch and customize to make new presentations; for now we don't have
that, so we're kind of pretending 'oss-goals-field-guide' is that.