Check for reply to email address before going live

We require that a user has a real reply-to email address before going
live. We can partially automate this by at least telling users who
haven’t done this.

This only applies for users that have email templates; we shouldn’t
bother users who aren’t going to send emails about this.

app/templates/views/service-settings/request-to-go-live.html

@@ -26,6 +26,14 @@
           has_templates,
           'You’ve added some templates',
         ) }}
+        {% if has_email_templates %}
+          {{ tick_cross_done_not_done(
+            has_email_reply_to_address,
+            'You’ve added an email reply to address on the <a href="{}">settings</a> page'.format(
+              url_for('main.service_settings', service_id=current_service.id)
+            )|safe,
+          ) }}
+        {% endif %}
       </ul>
       <p>
         You also need to:
@@ -34,10 +42,6 @@
         <li>
           read our <a href="{{ url_for('.terms') }}">terms of use</a>
         </li>
-        <li>
-          specify your reply to email address or text message sender in your
-          <a href="{{ url_for('main.service_settings', service_id=current_service.id) }}">settings</a> page
-        </li>
         <li>
           make sure your messages follow the GOV.UK Service Manual standards for
           <a href="https://www.gov.uk/service-manual/design/sending-emails-and-text-messages">writing text messages and emails</a>