back button for image properties

not so easy, as it should not be shown after uploading

include/functions_images.inc.php

@@ -2295,13 +2295,13 @@ function serendipity_showPropertyForm(&$new_media, $keywordsPerBlock = 3, $is_ed
 
         serendipity_parseMediaProperties($dprops, $keywords, $show[$idx], $props, $keywordsPerBlock, $is_edit);
     }
-
     $smarty_vars = array(
         'is_edit'           => $is_edit,
         'editform_hidden'   => $editform_hidden,
         'keywordsPerBlock'  => $keywordsPerBlock,
         'keywords'          => $keywords,
-        'dprops'            => $dprops
+        'dprops'            => $dprops,
+        'case_add'          => is_array($new_media[0]['created_thumbnail'])     // created_thumbnail is only set when viewing properties after adding an image
     );
 
     return serendipity_showMedia(

templates/2k11/admin/media_properties.tpl

@@ -12,6 +12,9 @@
 {$MEDIA_ITEMS}
 {if $media.is_edit}
     <div class="form_buttons">
+        {if NOT $media.case_add}
+            <a class="button_link" href="?serendipity[adminModule]=media">Back</a>
+        {/if}
         <input name="submit" type="submit" value="{$CONST.GO}">
     </div>
 </form>