Better public docspaces

We've heard you, the rendering on the public view of docspaces needed improvements.

A refreshed UI is now available, along with performance improvements and placeholders for loading states. The search function used to be a bit hidden, now it's front right and center.

We've also made it possible for you to set the favicon to make your branding experience complete.

Now go in there and build the best documentation for your team and customers!