Prepare gnome-3-26 branch for 3.26.4 release
Cherry-picked some fixes for the gnome-3-26 branches, this should be a fast forward push to origin, but making a PR just in case something isn't ok to be backported.
Cherry-picked some fixes for the gnome-3-26 branches, this should be a fast forward push to origin, but making a PR just in case something isn't ok to be backported.