added (again) underline to a tags

htroot/env/base.css

@@ -71,22 +71,17 @@ h4 {
 }
 
 a:link {
-  text-decoration:none;
+  text-decoration:underline;
-}
-
-a:visited {
-  text-decoration:none;
 }
 
 a:visited {
-  text-decoration:none;
+  text-decoration:underline;
 }
 
 a:hover {
   text-decoration:underline;
 }
 
-
 /* mark external links */
 a[href^="http://"], a[href^="https://"]  {
   background: url(/env/grafics/external.png) center right no-repeat;