Add modified SPEC file for paper-gtk-theme
Add modified SPEC file for paper-gtk-theme

source: https://github.com/snwh/paper-gtk-theme/blob/6a5f14cfe697b0a829456a1fd560acdcddc6043f/paper-gtk-theme.spec
Changes:
- Remove command to copy non existing Paper-Dark folder.
- Other changes to make file similar to project's icon spec file.

user501254/packaging