Add separate pages to view live/trial services

We have a lot of services now. Mostly we want to look at what live
services are doing. So loading up the trial mode services every time
slows things – generating, rendering and using the page – right down.

This commit adds two new pages, one to view only live services, and one
to view trial mode services.

app/main/views/platform_admin.py

@@ -41,6 +41,37 @@ def platform_admin():
     )
 
 
+@main.route("/platform-admin/live-services", endpoint='live_services')
+@main.route("/platform-admin/trial-services", endpoint='trial_services')
+@login_required
+@user_has_permissions(admin_override=True)
+def platform_admin_services():
+    form = DateFilterForm(request.args)
+    api_args = {'detailed': True,  # specifically DO get inactive services
+                'include_from_test_key': form.include_from_test_key.data
+                }
+
+    if form.start_date.data:
+        api_args['start_date'] = form.start_date.data
+        api_args['end_date'] = form.end_date.data or datetime.utcnow().date()
+
+    services = filter_and_sort_services(
+        service_api_client.get_services(api_args)['data'],
+        trial_mode_services=request.endpoint == 'main.trial_services',
+    )
+
+    return render_template(
+        'views/platform-admin/services.html',
+        include_from_test_key=form.include_from_test_key.data,
+        form=form,
+        services=list(format_stats_by_service(services)),
+        page_title='{} services'.format(
+            'Trial mode' if request.endpoint == 'main.trial_services' else 'Live'
+        ),
+        global_stats=create_global_stats(services),
+    )
+
+
 def sum_service_usage(service):
     total = 0
     for notification_type in service['statistics'].keys():
@@ -60,6 +91,21 @@ def get_statistics(services):
     }
 
 
+def filter_and_sort_services(services, trial_mode_services=False):
+    return (
+        service for service in sorted(
+            services,
+            key=lambda service: (
+                service['active'],
+                sum_service_usage(service),
+                service['created_at']
+            ),
+            reverse=True,
+        )
+        if service['restricted'] == trial_mode_services
+    )
+
+
 def create_global_stats(services):
     stats = {
         'email': {