No translations other then French installed on Ubuntu Linux

[Johann-Tree]

On Ubuntu Linux 20.04.5 there is no localization except French installed.

In the file setup.py only French is added to data_files:

data_files=[('/usr/share/pdfbooklet/data', glob.glob('pdfbooklet/data/*.*')),
            ('/usr/share/pdfbooklet/documentation', glob.glob('./documentation/*.*')),          
            ('/usr/share/applications', ['pdfbooklet/data/pdfbooklet.desktop']),
            ('/usr/share/locale/fr/LC_MESSAGES', glob.glob('locale/fr/LC_MESSAGES/*.*')),
            ('/usr/share/pixmaps', ['pdfbooklet/data/pdfbooklet.png']),
            ('/usr/share/pdfbooklet/icons/hicolor/scalable', ['pdfbooklet/data/pdfbooklet.svg'])]