Fix for language bug in e-Newsletter

Hi,

There is a small bug in the e-Newsletter that prevents the translations being used. The path passed to load_plugin_textdomain() is incorrect. On line 80 in the e-newsletter.php needs to look for the files in the correct folder like this:

load_plugin_textdomain( 'email-newsletter', false, dirname( plugin_basename( __FILE__ ) ) . '/email-newsletter-files/languages' );

Jouni