diff -r 07239de796bb -r e756a8c72c3d cms/drupal/modules/system/system.cron.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cms/drupal/modules/system/system.cron.js	Fri Sep 08 12:04:06 2017 +0200
@@ -0,0 +1,19 @@
+(function ($) {
+
+/**
+ * Checks to see if the cron should be automatically run.
+ */
+Drupal.behaviors.cronCheck = {
+  attach: function(context, settings) {
+    if (settings.cronCheck || false) {
+      $('body').once('cron-check', function() {
+        // Only execute the cron check if its the right time.
+        if (Math.round(new Date().getTime() / 1000.0) > settings.cronCheck) {
+          $.get(settings.basePath + 'system/run-cron-check');
+        }
+      });
+    }
+  }
+};
+
+})(jQuery);