- images.path column added to reduce database access

- function mass_inserts moved from admin/remote_sites.php to
  admin/include/function.php

- function mass_inserts used in admin/update.php


git-svn-id: http://piwigo.org/svn/trunk@606 68402e56-0260-453c-a942-63ccdbb3a9ee

install/phpwebgallery_structure.sql

@@ -140,6 +140,7 @@ CREATE TABLE phpwebgallery_images (
   representative_ext varchar(4) default NULL,
   date_metadata_update date default NULL,
   average_rate float(5,2) unsigned default NULL,
+  path varchar(255) NOT NULL default '',
   PRIMARY KEY  (id),
   KEY images_i2 (date_available),
   KEY images_i1 (storage_category_id),