merge Machinery into Tools section
merge Machinery into Tools section

There's a bit too much overlap between two sections called "What's new"
and "News", and also Machinery isn't new any more.  So drop the "What's
new" section which only contained Machinery, and move Machinery into the
"Tools" section.

FIXME: this needs a better icon for Machinery

openSUSE/landing-page,openSUSE/landing-page,openSUSE/landing-page