Make the unselected link boxes light purple

The boxes around unselected links (unit links, subunit links,
etc.) are gray in colour. Make them light purple in order to
match with the purple theme, i.e. purple header and footer.
Remove additional space below help text

There is a huge amount of vertical space between the help text
and the footer. This is due to the margin around noscriptWrapper
element that is outside the noscript tags. As a result, the
noscriptWrapper element is active and the margin around it
pushes the footer further down even when JavaScript is enabled.
Fix this bug by moving the noscriptWrapper element into the
noscript element.