Make it possible to install evince plugins
Submitted by Bastien Nocera
- Install a stock Fedora 22 with evince included
- Try to open a DjVu file (plenty of them at http://djvu.org/resources/)
- Evince opens and says: File type DjVu image (image/vnd.djvu) is not supported
Instead, I should be asked whether I want to install the evince-djvu package in gnome-software.