[#31] Fix indentation, convert tabs to spaces
[#31] Remove the external link icon from links on the about page
[#31] External links other than the twitter pictures *do* have the icon

Without CSS4 selectors to style the parent, I think adding a class to
the links we want to skip is the only way this can be done for this
page.
Merge branch '31-fix-about-page-styling'