Thanks for this contribution Clyde. I think it could help my site a lot. I just have a very small suggestion to make.

In admin/includes/languages/english/testimonials_manager.php

This:

PHP Code:
define('TABLE_HEADING_MAIL', 'Author\s E-Mail'); 
Should be:

PHP Code:
define('TABLE_HEADING_MAIL', 'Author\'s E-Mail'); 
Thanks again