Updates translated draft pages
Updates translated draft pages

Liberty is now EOL and let's remove Mitaka documents
which were already published to language pages.
This commit also updates draft index pages
with stable/newton and master documents.

Change-Id: I173693667c9f97a7eb6a2b23969d8b6aa57f4c5f

openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals