bug:2820 & bug:2684

add $conf['maxRequests']
perf enhanced : declare once {combine_script}
add one loading gif, fixed at the bottom right of the page
display an icon for picture loading, and an error icon if ajax failed : might need to be integrated in sprite.png
ToDo picture page/clean up unused loader gif/sleep above all.


git-svn-id: http://piwigo.org/svn/trunk@20161 68402e56-0260-453c-a942-63ccdbb3a9ee

include/category_default.inc.php

@@ -153,6 +153,7 @@ foreach ($pictures as $row)
 
 $template->assign( array(
   'derivative_params' => trigger_event('get_index_derivative_params', ImageStdParams::get_by_type( pwg_get_session_var('index_deriv', IMG_THUMB) ) ),
+  'maxRequests' =>$conf['maxRequests'],
   'SHOW_THUMBNAIL_CAPTION' =>$conf['show_thumbnail_caption'],
     ) );
 $tpl_thumbnails_var = trigger_event('loc_end_index_thumbnails', $tpl_thumbnails_var, $pictures);