Rework translation templates
Rework translation templates

Instead of creating a new template with each release, create one for
master only and one for master and translated branches. That makes
switching to new releases easier.

Also, fix a typo.

Change-Id: Iedd2cdbbc42f09ff7e54917e161c583892eb0000

openstack-infra/openstack-zuul-jobs,openstack-infra/openstack-zuul-jobs