Removed reference to secondary database link $ldb

This means that both the limesurvey and the quexs tables must be in the same database, with the same connection
But has the advantage of being able to join records across tables easily

nocaseavailable.php

@@ -162,7 +162,7 @@ if (!empty($rs))
 	{
 		$sql = "SELECT count(*)
 			FROM " . LIME_PREFIX ."tokens_{$r['lime_sid']}";
-		$rs2 = $ldb->GetRow($sql);
+		$rs2 = $db->GetRow($sql);
 
 		if (empty($rs2))
 			print "<p class='error'>" . T_("ERROR: No tokens table defined for LimeSurvey questionnaire") . " {$r['lime_sid']} " . T_("from questionnaire:") . " {$r['description']}</p>";