Created attachment 4609 patch to switch to xdg icon names Please consider using xdg-compliant icon names as per http://standards.freedesktop.org/icon-naming-spec/icon-naming-spec-latest.html Attaching a patch, not sure if it is complete, but for me it fixes all missing icons.
Pushed to master. Please let me know if the patch causes problems on any distribution. On Ubuntu (and presumably on Fedora) it works just fine.
Mass-reassign all bugs from florian@ to goodies-dev@, thanks for the maintenance work! (and sorry for the bugmail spam..)
As the patch has been pushed I'm marking this fixed.