text view: Convert to CSS nodes
text view: Convert to CSS nodes

Use subnodes for the border windows, and add children to the right
subnodes.

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