Don’t break statistics down by sending/failed/delivered

This should:
- make the page load faster because it has to render less HTML for each
  service
- make the page easier to scan for services that are sending lots of
  text messages or letters

We used to scan this page to look for services with high failure rates,
and the design of the page was gear towards this. Now we have alerting
for high failure rates, so the page can focus on volumes instead.

This commit also puts the service name above the statistics, so that
long service names don’t break the layout of the page.

app/main/views/platform_admin.py

@@ -505,14 +505,7 @@ def format_stats_by_service(services):
         yield {
             'id': service['id'],
             'name': service['name'],
-            'stats': {
-                msg_type: {
-                    'sending': stats['requested'] - stats['delivered'] - stats['failed'],
-                    'delivered': stats['delivered'],
-                    'failed': stats['failed'],
-                }
-                for msg_type, stats in service['statistics'].items()
-            },
+            'stats': service['statistics'],
             'restricted': service['restricted'],
             'research_mode': service['research_mode'],
             'created_at': service['created_at'],