todo: Remove useless item

We can't drop MPEG2, we could just offer H.264 as well
doc: Re-organize rygel.conf man file

Add a "Plugin-specific settings" section title and move it so that
the plugin sections are directly below this section.

https://bugzilla.gnome.org/show_bug.cgi?id=707831
core: Add UPnP BasicManagement service support

Add BasicManagement:2 service that contains a bunch of
tools (Ping, NSLookup and Traceroute to start with). Service is
useful for DLNA Diagnostics, and can be enabled on a
plugin-by-plugin basis.

See doc/README.BasicManagement for details.

Commit was partly authored by Christophe Guiraud
<christophe.guiraud@intel.com>.

https://bugzilla.gnome.org/show_bug.cgi?id=707831