[development] Modules for Core

[Karoly Negyesi]

	> I vote to remove it:

I concur.

>   * Our core audience isn't blog users.

Once it was. Or so I think :)

>   * We don't ship many other things that are very typical for blog
>     installations, like a wysiwig editor, urlfilter.module, or
>     Atom support.

As I have just written a blog API client module, I can tell that the world  
is rushing towards Atom. So, providing an ancient API server is not bad,  
but not core worthy any more.