The fullscreen UI now shows roughly the same design as the popup UI.
A few additional changes depicted in the new fullscreen designs will
be implemented in subsequent PRs (e.g. the inline buttons on assets)
This was done now to make asset pages easier to implement. Implementing
asset pages solely for the popup UI would have been complicated by the
fact that we use viewport size to switch between the two layouts, so we
would have had to re-route upon resizing the window.