The new quick-start docs (which set up all of Zuul in containers)
are the best place for a new user to get familiar with Zuul.
Depends-On: https://review.openstack.org/609432
Change-Id: I2732b6be347d88578175661a87ddd8164af13d86
In support of print media (slides and brochures) use a short "start"
URL which currently redirects to the ZFS tutorial but can also be
repointed wherever we like if something better comes along. Update
the Get Started button on the index page to use this URL so we don't
need to change it in two places.
Change-Id: I0edd947ace425dd5bd009f9055b269dbbbec9d30