Adopting fonts from documentation

[froschdesign]

Example

[froschdesign]

@settermjd
I have added a preview, but I am open to something completely different. All comments/opinions are welcome!

[arhimede]

@settermjd I have added a preview, but I am open to something completely different. All comments/opinions are welcome!

I completely agree
Fonts are now a bit too unreadable, too light
I can merge this one if you are fine with it and make a PR @froschdesign