Heads-up: icedtea-web in comps

[Michael Catanzaro]

Hi,

I've removed icedtea-web from the firefox group in comps for F23 (not 
F22). If icedtea-web is installed by default in your spin and you want 
to keep it in F23, please add it into your spin's group. This is so 
that we can keep the firefox group as optional in the gnome-desktop-
environment category without pulling in yucky icedtea-web 
automatically.

Note: There should be no user-facing change except when performing a 
netinstall and selecting GNOME Desktop Environment. Fedora Workstation 
already did not include icedtea-web.

Michael