The previous instructions to copy the persistent data were creating personal
files that belong to root. I don't think there is a way of preserving the
original ownership using Nautilus (unless doing a "move" instead of a "copy" but
that's not what we are trying to do here).

Note that Math does not have its own menu entry and is only available from the
LibreOffice starter menu. That's why we're pointing to it.

Conflicts:
	wiki/src/doc/about/features.fr.po
	wiki/src/doc/first_steps/upgrade.pt.po
	wiki/src/support/known_issues.de.po
	wiki/src/support/known_issues.fr.po
	wiki/src/support/known_issues.mdwn
	wiki/src/support/known_issues.pt.po

Support running language_statistics.sh from the root of the repository too, and error out if it's not run from a supported place.

Conflicts:
	config/chroot_local-includes/usr/local/bin/tails-activate-win8-theme

Conflicts:
	config/chroot_local-includes/usr/local/bin/tails-activate-win8-theme

Closes https://labs.riseup.net/code/issues/7401 with the associated gnome-theme-windows8

Conflicts:
	config/chroot_local-includes/usr/local/sbin/tails-prepare-win8-theme

Conflicts:
	config/chroot_local-includes/usr/local/sbin/tails-prepare-win8-theme