inspector: Some improvements to the CSS node tree
inspector: Some improvements to the CSS node tree

Set a min-content-height for the property list, and
allow horizontal scrolling.

grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita,grubersjoe/adwaita