- admin/update : deletion of useless lines

- admin/thumbnail : use new process for finding pictures without
  thumbnails. No more recursivity

- admin/thumbnail : only show list of directory containing pictures without
  thumbnails, not the whole directory tree


git-svn-id: http://piwigo.org/svn/trunk@665 68402e56-0260-453c-a942-63ccdbb3a9ee

admin/update.php

@@ -341,10 +341,6 @@ SELECT IF(MAX(id)+1 IS NULL, 1, MAX(id)+1) AS next_element_id
         $tn_ext = $ext;
         break;
       }
-      else
-      {
-        continue;
-      }
     }
 
     // 2 cases : the element is a picture or not. Indeed, for a picture
@@ -387,10 +383,6 @@ SELECT IF(MAX(id)+1 IS NULL, 1, MAX(id)+1) AS next_element_id
           $representative_ext = $ext;
           break;
         }
-        else
-        {
-          continue;
-        }
       }
 
       $insert{'id'} = $next_element_id++;