appimage: Deploy okularGenerator_poppler.so
* src/appimage/build-appimage.sh: Ensure /usr/lib/plugins exists in AppDir. Copy the poppler plugin of Okular.
rsync creates the plugin subfolders for us, so that we only need to
create the plugins folder itself. We need to deploy the poppler Okular
generator plugin to enable displaying of PDFs.
- Fixes-commit: 0da1d1deb23787629b08190e43af77ed36696dd0
- GnuPG-bug-id: T7509