~name Latest Memberships portlet joined date is rendered in the incorrect style

Bug 436261 attempted to fix the Latest Membership portlet's secondary line, where the joined date is displayed on a person's index page (e.g. <http://launchpad.dev/~name12>). It did this by adding a class="registered" to the containing div.

However, because of the style-3.0.css style sheet, this text got rendered in italics which is counter to the current 3.0 UI style. If you look at .registered on <li> though, it seems to render the secondary line correctly, as in <https://edge.launchpad.net/launchpad-registry> under Latest bugs reported.

A possible fix then is to remove the "font-style: italics" from plain .registered, but this has unknown consequences because we do not know where that style is used (we can grep for class="registered" in the code base, but that's not necessarily the same thing). We could add to the chaos and add another style, or we could stick the "joined on" date inside an <li>.

Personally I think we should bring some sanity to our 3.0 style sheet.