Improve Debian Font Display

[tbp1...@gmail.com]

Since the thread on Debian installations got be working with Debian, I found this page

https://unix.stackexchange.com/questions/529598/why-does-ubuntu-render-fonts-better-than-debian

It gives some changes to the font config files that are supposed to get Debian to render (at least some) fonts as Ubuntu renders them, which is much better than Debian.  I have found Debian fonts slightly unpleasant to look at so I tried out the suggested changes.  And yes, Leo now looks quite a bit nicer to my eyes.

[tbp1...@gmail.com]

These changes may only affect display with DejaVu Sans Mono, Bitstream Vera, and generally smaller sizes of monospaced font.  I've set up DejaVu as the display font for Leo, so it works out well.