Add a moderation boolean to the user entries.

[mmulich]

This will allow publishing to know that a user has been vetted
for publication. If not, the publication will be put into a
wait state where an moderator will need to moderate the content.

[mmulich]

ALTER TABLE users
    ADD COLUMN is_moderated boolean;

UPDATE users SET (is_moderated) = ('t')
    WHERE username IN (
        SELECT DISTINCT unnest(authors) FROM modules
        UNION
        SELECT DISTINCT unnest(maintainers) FROM modules
        UNION
        SELECT DISTINCT unnest(licensors) FROM modules
        UNION
        SELECT DISTINCT unnest(personids) FROM moduleoptionalroles);

[coveralls]

Changes Unknown when pulling 7098cbb on moderation into * on master*.

[reedstrm]

Some reason ypu left licensors out of the "preapproved" list?