updated cron endpoint + cron.jsx

lib/API/Endpoints/Cron.php

@@ -1,16 +1,23 @@
 <?php
 namespace MailPoet\API\Endpoints;
+use \MailPoet\API\Endpoint as APIEndpoint;
+use \MailPoet\API\Error as APIError;
 
 use MailPoet\Cron\CronHelper;
 use MailPoet\Models\Setting;
 
 if(!defined('ABSPATH')) exit;
 
-class Cron {
+class Cron extends APIEndpoint {
   function getStatus() {
-    $daemon = Setting::getValue(CronHelper::DAEMON_SETTING);
-    return ($daemon) ?
-      $daemon :
-      array('status' => false);
+    $daemon = Setting::getValue(CronHelper::DAEMON_SETTING, false);
+
+    if($daemon === false) {
+      return $this->errorResponse(array(
+        APIError::NOT_FOUND => __('Cron daemon is not running.')
+      ));
+    } else {
+      return $this->successResponse($daemon);
+    }
   }
 }