- remove square/thumb from choices on picture

- fix content margin on password register 
- purge derivative cache by type of derivative
- session saved infos/messages are not given to the page on html redirections
- shorter/faster code in functions_xxx

git-svn-id: http://piwigo.org/svn/trunk@13074 68402e56-0260-453c-a942-63ccdbb3a9ee

admin/maintenance.php

@@ -142,7 +142,7 @@ DELETE
   }
   case 'derivatives':
   {
-    clear_derivative_cache();
+    clear_derivative_cache($_GET['type']);
     break;
   }
   default :
@@ -159,6 +159,12 @@ $template->set_filenames(array('maintenance'=>'maintenance.tpl'));
 
 $url_format = get_root_url().'admin.php?page=maintenance&action=%s&pwg_token='.get_pwg_token();
 
+$purge_urls[l10n('all')] = sprintf($url_format, 'derivatives').'&type=all';
+foreach(ImageStdParams::get_defined_type_map() as $params)
+{
+  $purge_urls[ l10n($params->type) ] = sprintf($url_format, 'derivatives').'&type='.$params->type;
+}
+
 $template->assign(
   array(
     'U_MAINT_CATEGORIES' => sprintf($url_format, 'categories'),
@@ -173,10 +179,12 @@ $template->assign(
     'U_MAINT_SEARCH' => sprintf($url_format, 'search'),
     'U_MAINT_COMPILED_TEMPLATES' => sprintf($url_format, 'compiled-templates'),
     'U_MAINT_DERIVATIVES' => sprintf($url_format, 'derivatives'),
+    'purge_derivatives' => $purge_urls,
     'U_HELP' => get_root_url().'admin/popuphelp.php?page=maintenance',
     )
   );
 
+
 if ($conf['gallery_locked'])
 {
   $template->assign(