Updated Spanish translation
Updated Brazilian Portuguese translation
Change the application icons

This was the first icons made by Éric Forgeot. There is an SVG version.
For big sizes (e.g. in gnome-shell) it is really nice, but for small
sizes (e.g. in Xfce), it is a bit ugly. But the previous icon (made by
Ann Melnichuk) was also a bit ugly for small sizes.