Issue #2063615 by coltrane: Added Review unsafe tags and update.
Followup #2001092 by coltrane: Add include settings.php as additional way to check for base_url() being set.
Issue #1955974 by mgifford, coltrane: Improve text of file permissions check
Issue #2071775 by coltrane: Private files in relative directories such as ../private are not a problem.
Issue #2055845 by coltrane: Added List which field and revision dangerous tags were found in.
Issue #1946106 by coltrane: File system check fails on a subdirectory multisite configuration.
Issue #1228742 by coltrane: Include line item in Status Report.