Added a formatting method to print the age of a datetime object, and modified the lease view to use it. I anticipate customizing the function to be more fuzzy and less precise.

git-svn-id: file:///svn-source/pmgr/branches/ledger_transactions_20090605@89 97e9348a-65ac-dc4b-aefc-98561f571b83

site/views/helpers/format.php

@@ -64,4 +64,9 @@ class FormatHelper extends AppHelper {
     return $comment;
   }
 
+  function age($datetime) {
+    return $time->timeAgoInWords($datetime,
+				 array('end' => '+99 years'));
+  }
+
 }