GNOME: Remove several old packages and add gnome-photos to suggests

Remove GNOME 2.x / fallback / not-existing-anymore package:
 - evolution-groupwise (not existing)
 - gnome-applets (fallback)
 - gnome-commander (doesn't fit GNOME 3)
 - gnome-media (not existing)
 - gnome-panel (fallback)
 - gnome-phone-manager (useless nowadays)
 - metacity (fallback)
 - nautilus-open-terminal (not existing)
 - notification-daemon (fallback)
 - pessulus (not existing)
 - sabayaon (not existing)

Also add gnome-photos to Suggests for GNOME-IMAGE (it's not ready yet,
but people might want to discover it).

Also remove a duplicate rhythmbox (was in Suggests whil already in
Recommends).
Merge pull request #54 from vuntz/gnome-update

GNOME: Remove several old packages and add gnome-photos to suggests