- bug 654: sql error on user comment (since my commit 1849)

- languages: english corrections + keep lang files sorted by key
- admin multi view correction: language was not always properly changed
- refactor function get_computed_categories (with rub's blessing)

git-svn-id: http://piwigo.org/svn/trunk@1860 68402e56-0260-453c-a942-63ccdbb3a9ee

plugins/admin_multi_view/is_admin.inc.php

@@ -13,7 +13,7 @@ if (! defined('MULTIVIEW_CONTROLLER') )
     list($user['template'], $user['theme']) = explode('/', $theme);
   }
   $lang = pwg_get_session_var( 'multiview_lang', '' );
-  if ( !empty($theme) )
+  if ( !empty($lang) )
   {
     $user['language'] = $lang;
   }