Remove max size on window content

It's a bad idea, unless applied on a case-by-case basis.
It makes things wrap badly when the viewport is narrow, making things
much less readable, even though the aim is to make it more readable
by ensuring visibility. And it makes message boxes feel less OS-like.
It's better to have to drag a window back and forth to read it, than
to have it wrap at every character.

paint.css

@@ -188,8 +188,6 @@ Screen {
 .window_content {
     layout: vertical;
     overflow: auto;
-    max-height: 60vh;
-    max-width: 80vw;
     width: auto;
     height: auto;
     background: $background;