Support SVG font outside the browser environment

[tim-kilian]

Problem

#114 will fix that the fonts will work in a browser environment, but it wont outside. So to make it work outside, we have to translate the fonts into shapes. Maybe there is a library that do this for us.

Originally posted by @tim-kilian in #103 (comment)

[tim-kilian]

After installing the font itself on my environment it seems to work.

[0x4d]

Most editors that are not browsers will ignore the @import which I think is a good thing.
They should however all fall back to the sans-serif declaration?
Maybe we should use the web font only for the UI and only system fonts inside the SVG?