Indicate template on scheduled jobs

We’ve removed the template on the jobs page, so you can no longer see
which template a job is about to be sent with.

This is removing information which might enable you to undo a costly
mistake.

I don’t think we need to bring back the whole template – giving its
name, and a link to it meets the need just as well.

app/templates/partials/jobs/notifications.html

@@ -5,7 +5,9 @@
   {% if job.job_status == 'scheduled' %}
 
     <p>
-      Sending will start {{ job.scheduled_for|format_datetime_relative }}
+      Sending
+      <a href="{{ url_for('.view_template_version', service_id=current_service.id, template_id=template.id, version=template_version) }}">{{ template.name }}</a>
+      {{ job.scheduled_for|format_datetime_relative }}
     </p>
     <div class="page-footer">
       <form method="post">