Merge branch 'debian/master' into ubuntu/master

ChangeLog

config.guess

config.sub

configure

configure.ac

debian/changelog

debian/control

debian/control.in

...patches/Don-t-allow-the-theme-to-set-black-on-black.patch

...rovide-fallback-for-reading-current-directory-if-OS.patch

debian/patches/nautilus-x11.patch

debian/patches/series

help/C/app-zoom.page

help/C/pref-profile-char-width.page

help/ca/ca.po

help/cs/cs.po

help/es/es.po

help/pl/pl.po

help/sv/sv.po

po/am.gmo