New dformat() function for fuzzy date support

Ignore-this: 7193cd788fee2c05a9068bf6edd5dc17

It is now possible to use the %f placeholder in $conf['dformat']
to add a fuzzy age string.

Template developers and plugin authors should replace their strftime +
$conf['dformat'] calls with calls to the new dformat() function.

Example:

   %Y/%m/%d %H:%M (%f) produces dates like this:

   2009/09/16 10:36 (3 weeks ago)

darcs-hash:20091007133614-6e07b-677108d1b43928ef8fd886813e43514507b5e073.gz

2 files changed, 2 insertions, 2 deletions

diff --git a/lib/exe/ajax.php b/lib/exe/ajax.php
index 4d9a8105a..4618abd71 100644
--- a/lib/exe/ajax.php
+++ b/lib/exe/ajax.php
@@ -152,7 +152,7 @@ function ajax_lock(){
                   );
     $cname = getCacheName($draft['client'].$id,'.draft');
     if(io_saveFile($cname,serialize($draft))){
-      echo $lang['draftdate'].' '.strftime($conf['dformat']);
+      echo $lang['draftdate'].' '.dformat();
     }
   }
 
diff --git a/lib/tpl/default/detail.php b/lib/tpl/default/detail.php
index 765358568..4f42b116e 100644
--- a/lib/tpl/default/detail.php
+++ b/lib/tpl/default/detail.php
@@ -53,7 +53,7 @@ if (!defined('DOKU_INC')) die();
       <dl class="img_tags">
         <?php
           $t = tpl_img_getTag('Date.EarliestTime');
-          if($t) print '<dt>'.$lang['img_date'].':</dt><dd>'.strftime($conf['dformat'],$t).'</dd>';
+          if($t) print '<dt>'.$lang['img_date'].':</dt><dd>'.dformat($t).'</dd>';
 
           $t = tpl_img_getTag('File.Name');
           if($t) print '<dt>'.$lang['img_fname'].':</dt><dd>'.hsc($t).'</dd>';