graphics/papirus-icon-theme: import version 20181007

Papirus is a free and open source SVG icon theme, based on Paper Icon
Set with a lot of new icons and a few extras, like Hardcode-Tray support,
KDE colorscheme support, Folder Color support, and others.

The Papirus icon theme is available in four variants:

* Papirus
* Papirus Dark
* Papirus Light
* ePapirus (for elementary OS and Pantheon Desktop)

(nia)