#270854 (partially by webchick): modify UI to remove the "overridden" icon and instead change display on items that are "defaulted" to make them more visually unique.

#240102: (Largely by neclimdul) -- Initial pass at profile field handlers. Still 3 @todo items remain but they are not hard.

Fix a couple of small theming bugs, plus some new handlers from adrian. These need some adjustments still but I wanted to get them in as a start.