Removed /components because /3.x has replaced it.
Removed /docs/v4.0.0 because /docs/v4.0.0-alpha1 has replaced it
Removed /mono-theme and /themes/mandelbrot because they are not in use.
Removed subdirectories from /assets because they are now in /3.x/assets
Removed .html files that are now found in /3.x
Another piece of #892.
Removed /components because /3.x has replaced it. Removed /docs/v4.0.0 because /docs/v4.0.0-alpha1 has replaced it Removed /mono-theme and /themes/mandelbrot because they are not in use. Removed subdirectories from /assets because they are now in /3.x/assets Removed .html files that are now found in /3.x