Combine any pdfs and images using right click in Gnome Nautilus

Select any files or folders, right click > "Combine PDFs". This will take all pdfs and images selected as well as those inside the subfolders. The resulting combined.pdf file is made concatenating the files in alphabetical path order.

1. Install nautilus-python using package manager
2. Make sure pdftk is installed
3. Add the python file to the extensions folder, shell script for the lazy ones:

mkdir ~/.local/share/nautilus-python
mkdir ~/.local/share/nautilus-python/extensions
git clone https://github.com/BinaryQuantumSoul/nautilus-pdf-combine
cp nautilus-pdf-combine/nautilus-pdf-combine.py ~/.local/share/nautilus-python/extensions/
rm -rf nautilus-pdf-combine
nautilus -q