* update.cfg: Switch to vivid.

* Refreshed dependencies
* Added printer-driver-brlaser to core-recommends [amd64 armhf i386
  powerpc]
* Added python3-aptdaemon.pkcompat to desktop [amd64 armhf i386
  powerpc]
* Added ttf-ancient-fonts-symbola to core-recommends [amd64 armhf i386
  powerpc]
* Added xfce4-power-manager-plugins to desktop [amd64 armhf i386
  powerpc]
* Removed abiword from desktop [powerpc]
* Removed audacious from desktop [powerpc]
* Removed audacious-plugins from desktop [powerpc]
* Removed fonts-droid from desktop [amd64 armhf i386 powerpc]
* Removed fonts-liberation from desktop [amd64 armhf i386 powerpc]
* Removed fonts-nanum from desktop [amd64 armhf i386 powerpc]
* Removed gecko-mediaplayer from desktop [amd64 armhf i386 powerpc]
* Removed gnome-accessibility-themes from desktop [amd64 armhf i386
  powerpc]
* Removed gnumeric from desktop [powerpc]
* Removed hardinfo from desktop [powerpc]
* Removed simple-scan from desktop [powerpc]
* Removed xpad from desktop [powerpc]