Fixed an issue where grid background images were drawn upside down and moved in the wrong direction on the Y axis when scrolling

Disable devil
Support mac build (which is useless as mono doesn't support winforms on modern macOS)

Fixed a problem where negative Y scales of sidedefs would result in a wrong offset when auto-aligning

Compute the length of the line in Plotter.DrawLine3DFloor with a method that actually works on big numbers

Call RedrawSurface in OnRedrawDisplay of NodesViewerMode, SoundPropagationMode and SoundEnvironmentMode so that the map gets updated properly and not being stretched/squished when the windows is resized

- Fixed a bug where lines with 3D floor indicators were 1 pixel off in their horizontal position