.io Domain Exception & Bug Fixes

I'm excited to share that we were granted an exception from the .io registry to use our domain for legal adult content! Based on this, I have changed the primary domain back to 'horni.io'.

Also, a couple bonus improvements:

• Individual news posts now include proper title and opengraph tags
• Fixed an issue where pagination for the list of games with a particular tag didn't keep the tags parameter (ie, it was linking back to all games)