Better disabling of message_success
Add --quiet reporting to many commands. Also…

support --all fro scope-{add,remove} commands.
Make manpage when we run `make dev-test`.

I am in the habit of running `make dev-test` before pushing changes to
GitHub, but I often forget to update the manpages. Since both operations
are author-side things, update the doc automatically when running
dev-tests.