The _path_ svg versions do not require install new fonts.

To open with the proper fonts, use the inkscape of gfif or install Good Times Font (included) in debian

# mkdir /usr/share/fonts/truetype/ttf-good-times/
# cp good-times.ttf /usr/share/fonts/truetype/ttf-good-times/

DEBIAN:

# fc-cache -fv

UBUNTU:

# defoma-hints -c --no-question truetype /usr/share/fonts/truetype/ttf-good-times/* > /etc/defoma/hints/ownfonts.hints

Now you register this file to defoma:

# defoma-font register-all /etc/defoma/hints/ownfonts.hints 

The last thing you have to do is to apply the new configuration. The quickest way is to call

# defoma-reconfigure

It updates the fonts database for all registered applications. To use the new fonts in your current X session, run

# xset fp rehash