fixed frame target

http://www.w3.org/TR/html4/types.html#type-frame-target

plugins/bug_report/setup.php

@@ -87,7 +87,7 @@ function bug_report_options() {
     echo ' /> ' . _("Show button in toolbar") . "</td></tr>\n";
 
     echo '<tr><td></td>' .
-         '<td><a href="' . SM_PATH . 'plugins/bug_report/show_system_specs.php" target="_new"><small>' . _("Show system specs") . '</small></a></td></tr>';
+         '<td><a href="' . SM_PATH . 'plugins/bug_report/show_system_specs.php" target="_blank"><small>' . _("Show system specs") . '</small></a></td></tr>';
 }
 
 ?>