Lights on! White theme extended to forums, now default for new visitors

You may have already noticed that following a few weeks of tweaking and bug squashing we've extended the new 'light' theme to the forums and deployed a new unified header that is shared between both dark and light versions of the site. The beta pop-up has been banished from the site and a new permanent 'Reading Mode' switch placed at the top right corner of the site. Use the 'Reading mode' switch (top right of every page) to switch between black and white themes. Your choice is remembered. White...