Alterations to link colors and typography

Mark found the menu links and inline links to have insufficiently
contrast. I've given what feels to me like a good shot at boosting the
contrast, but I'm not the color guy, so I need checking.
Similarly, type size on home page and new About page. (This one might
be generalizable to other pages.)
Swapping out Recent Items for Featured Item

After discussion, we decided to have the visual punch of a featured
item rather than a list of recent ones. I could see this decision being
revisited during the semester so students can see their work show up
frequently and then revisited again at the end when the site
transitions to less activity.