Fixed fonts and tweaked supersampling.

- Fonts were broken on machines without MS Word installed, since
  unfortunately the Century Gothic font was installed along with
  this. I chose the closest matching Google fonts to the original
  theme/intent, though it's not a perfect match unfortunately.

- Updated temporary code that would do extreme supersampling on
  low resolution windows (up to 4x width and 4x height) which was
  originally used to do a hacky anti-aliasing when presenting on
  my old university's dinosaur 800x600 projectors. Now it only
  supersamples up to 2x and only if the resolution is below 800x600.