SAAS-772: Send metadata to Tunein

Made Improvement so Airtime always makes a request to TuneIn every 4
minutes so TuneIn does not turn metadata off

airtime_mvc/application/forms/TuneInPreferences.php

@@ -87,6 +87,7 @@ class Application_Form_TuneInPreferences extends Zend_Form_SubForm
                 if (!$xmlObj || $xmlObj->head->status != "200") {
                     $valid = false;
                 } else if ($xmlObj->head->status == "200") {
+                    Application_Model_Preference::setLastTuneinMetadataUpdate(time());
                     $valid = true;
                 }
             }