Idwidth3

Created by: jogwen

Final fixes on this now (hopefully). Turns out all I needed to do was to:

• convert table-layout from fixed to auto (to allow column width to grow dependent on row content),
• stop making the id spans display as block elements (so that they can be as small as they need to be rather than filling the entire available width), and
• alter the span's padding to allow space for the icon on the right