Added "empty" text in the config page

mod.php

@@ -108,6 +108,9 @@
 					if(gettype($value) == 'boolean') {
 						$value = $value ? '<span style="color:green;">On</span>' : '<span style="color:red;">Off</span>';
 					} elseif(gettype($value) == 'string') {
+						if(empty($value))
+							$value = '<em>empty</em>';
+						else
 							$value = '<span style="color:maroon;">' . utf8tohtml(substr($value, 0, 110) . (strlen($value) > 110 ? '…' : '')) . '</span>';
 					} elseif(gettype($value) == 'integer') {
 						// Show permissions in a cleaner way