Allow admins to toggle public statistics API

app/views/admin/settings/discovery/show.html.haml

@@ -34,6 +34,11 @@
   .fields-group
     = f.input :peers_api_enabled, as: :boolean, wrapper: :with_label, recommended: :recommended
 
+  %h4= t('admin.settings.discovery.publish_statistics')
+
+  .fields-group
+    = f.input :activity_api_enabled, as: :boolean, wrapper: :with_label, recommended: :recommended
+
   %h4= t('admin.settings.discovery.follow_recommendations')
 
   .fields-group

config/locales/en.yml

@@ -713,6 +713,7 @@ en:
         profile_directory: Profile directory
         public_timelines: Public timelines
         publish_discovered_servers: Publish discovered servers
+        publish_statistics: Publish statistics 
         title: Discovery
         trends: Trends
       domain_blocks:

config/locales/simple_form.en.yml

@@ -75,6 +75,7 @@ en:
           hide: Completely hide the filtered content, behaving as if it did not exist
           warn: Hide the filtered content behind a warning mentioning the filter's title
       form_admin_settings:
+        activity_api_enabled: Counts of locally published posts, active users, and new registrations in weekly buckets
         backups_retention_period: Keep generated user archives for the specified number of days.
         bootstrap_timeline_accounts: These accounts will be pinned to the top of new users' follow recommendations.
         closed_registrations_message: Displayed when sign-ups are closed
@@ -236,6 +237,7 @@ en:
           hide: Hide completely
           warn: Hide with a warning
       form_admin_settings:
+        activity_api_enabled: Publish aggregate statistics about user activity in the API
         backups_retention_period: User archive retention period
         bootstrap_timeline_accounts: Always recommend these accounts to new users
         closed_registrations_message: Custom message when sign-ups are not available