Added KSS docs for search box.
Finished KSS doc for forms.
Added KSS comments for dropdowns.
Added KSS comments for image aspect ratios.
Added KSS comments for base image class and merged img--fade class into img.
Added KSS comments for avatars.
Added KSS comments for nav tabs.
Added KSS comments for navigation bar.
Added KSS comments for labels.
Added auto expansion and removed duScroll.
Added panel list highlighting in stlye guide.
Added KSS comments for lists.
Added KSS comments for thumbnails.