merge r12722 from branch 2.3 into trunk

merge r12723 from branch 2.3 into trunk

feature 2531 added: pwg.images.add is able to generate web size + thumbnail
(remote client needs to set "resize" option to something else than 0). When
the "resize" is On, only the "file" must be send with pwg.images.addChunk.

Small improvement compared to code implemented in branch 2.3 : use of
single_insert when resize is Off, single algorithm to update $info_colums (resize On/Off)


git-svn-id: http://piwigo.org/svn/trunk@12724 68402e56-0260-453c-a942-63ccdbb3a9ee

ws.php

@@ -226,7 +226,7 @@ function ws_addDefaultMethods( $arr )
     'ws_images_add',
     array(
       'file_sum' => array(),
-      'thumbnail_sum' => array(),
+      'thumbnail_sum' => array('default' => null),
       'high_sum' => array('default' => null),
       'original_sum' => array(),
       'original_filename' => array('default' => null),
@@ -240,6 +240,7 @@ function ws_addDefaultMethods( $arr )
         'default' => 0,
         'maxValue' => $conf['available_permission_levels']
         ),
+      'resize' => array('default' => false),
       ),
     'POST method only.
 <br><b>categories</b> is a string list "category_id[,rank];category_id[,rank]" The rank is optional and is equivalent to "auto" if not given.'