Bug#555508: Wallpapers should be moved to separate package

[MP <singularita@gmail.com>]

Package: kdebase-workspace-data
Version: 4:4.3.2-2

Installed size of this package is 57Mb, of this about 49 Mb (!) are wallpapers

I think that the wallpapers should be moved to separate package (as
they may be nice, but are really not needed and in most installations
they are just wasting disk space) and that package would be either in
Suggests: or Recommends: for this package. Inside this package, only
the essential data for KDE should remain.