MDL-67211 Tasks: Add cron_enabled setting.

Co-authored-by: Sam Marshall <[email protected]>

admin/tool/task/renderer.php

@@ -261,6 +261,16 @@ class tool_task_renderer extends plugin_renderer_base {
         return $cell;
     }
 
+    /**
+     * Displays a warning on the page if cron is disabled.
+     *
+     * @return string HTML code for information about cron being disabled
+     * @throws moodle_exception
+     */
+    public function cron_disabled(): string {
+        return $this->output->notification(get_string('crondisabled', 'tool_task'), 'warning');
+    }
+
     /**
      * Renders a link back to the scheduled tasks page (used from the 'run now' screen).
      *