Installing fonts into Raspbian isn't hard, you just need to know how.
After searching quite a bit I came across an instruction for Ubuntu which did the trick.
These instrictions came from an article on HowToEverything.net
If you want to use a TrueTypeFont systemwide and not only for one user, create a folder with a name of your choice in
let's say the new folders name is "shiny" you could do the job in a shell by typing
sudo mkdir /usr/share/fonts/truetype/shiny
copy your new fonts to this folder. root-priveleges are necessary, since it's a system folder.
The files must be readable for all users on the system though. (Thanks to John P. Heger for pointing this out!) To make sure this is the case for all fonts, issue the following command
sudo chmod -R a+r /usr/share/fonts/*
The final instruction requires you to have fontconfig installed.
sudo apt-get update sudo apt-get install fontconfig
Now you have the update you can update your systems font list:
sudo fc-cache -f -v