fmt:link icon could be presented better using CSS

Objects presented using fmt:link (for example, the name next to "Logged in as" at the top right) are currently presented using an <img> and then some text, all inside an <a> element.

If we used CSS to display the image, instead of an <img> element, the underlining would look better in graphical browsers (because the image would not be underlined, just the text), and the page would also be less noisy in text browsers.

The desired markup, while our icon size is 14px*14px, is:
<a href="..." style="background: url(...) center left no-repeat; padding-left: 18px;">text</a>