Update all dates to use utc, only in the template is it converted to british time.

Template versions and template version pages added.

Fix merge changes.

app/templates/components/sms-message.html

@@ -14,6 +14,7 @@
       {% else %}
         {{ name }}
       {% endif %}
+      {% if created_at %}{{ created_at }}{% endif %}
     </h3>
   {% endif %}
   {% if recipient is not none %}