(Bug 4362) implement header links for module in header

-- Bannering: added active and hover, and note;
rephrased to match Core2 desc
-- Basic Boxes: added all
-- Boxes and Borders: added and replaced existing code;
also added missing # for some colors
-- Crossroads: added and replaced existing code
-- Database: added note; rephrased
-- Dusty Foot: replaced (same props)
-- Heads Up: added and replaced existing code
-- Librarian's Dream: added active, refactored to remove !important
and make .current a bit nicer
-- Patsy: replaced (same props) and reordered
-- Strata: added active and hover, and note
-- Tectonic: added note and reordered; rephrased
-- Wide Open: corrected typo