Add an Up button (to go to parent folder) when using always-use-location-entry
Copied from https://bugzilla.gnome.org/show_bug.cgi?id=662243
Nautilus 2 had an Up button on the toolbar. This is gone in Nautilus 3, presumably because the path bar is awesome and is a better Up button than an Up button. But people who have the always-use-location-entry option set in dconf are left without an easy way to go up. If you're going to keep supporting that tweak, you might as well make it good for those users. I propose adding an Up button before the Back and Forward buttons, if and only if always-use-location-entry is true.
Edited by Andre Klapper