CC-4790: Media Monitor: Re-added files won't show up in Library

-fixed

airtime_mvc/application/controllers/ApiController.php

@@ -490,6 +490,7 @@ class ApiController extends Zend_Controller_Action
                 // If the file already exists we will update and make sure that
                 // it's marked as 'exists'.
                 $file->setFileExistsFlag(true);
+                $file->setFileHiddenFlag(false);
                 $file->setMetadata($md);
             }
             if ($md['is_record'] != 0) {

airtime_mvc/application/models/StoredFile.php

@@ -1184,6 +1184,11 @@ SQL;
         $this->_file->setDbFileExists($flag)
             ->save();
     }
+    public function setFileHiddenFlag($flag)
+    {
+        $this->_file->setDbHidden($flag)
+            ->save();
+    }
     public function setSoundCloudUploadTime($time)
     {
         $this->_file->setDbSoundCloundUploadTime($time)