Add letter counts to the platform admin page.

The big number counts are based on how many messages have been delivered. For letters we are using the requested count.

app/templates/views/platform-admin/services.html

@@ -54,7 +54,7 @@
 
         {% call row() %}
           {% if not service['active'] %}
-            {% call field(status='default') %}
+            {% call field(status='default', border=False) %}
               <span class="heading-medium">archived</span>
             {% endcall %}
           {% elif service['research_mode'] %}
@@ -62,7 +62,7 @@
               <span class="research-mode">research mode</span>
             {% endcall %}
           {% elif not service['restricted'] %}
-            {% call field(status='error') %}
+            {% call field(status='error', border=False) %}
               <span class="heading-medium">Live</span>
             {% endcall %}
           {% else %}
@@ -72,6 +72,15 @@
           {{ stats_fields('sms', service['stats']) }}
         {% endcall %}
 
+        {% call row() %}
+
+          {% call field(border=False) %}
+
+          {% endcall %}
+            {{ stats_fields('letter', service['stats']) }}
+
+        {% endcall %}
+
       {% endcall %}
 
     {% endfor %}