split the admin/photos_add_direct.php script into
admin/include/photos_add_direct_prepare.php (prepare the upload form)
+ admin/include/photos_add_direct_process.inc.php (process the submitted form)
: it makes the upload form backend easier to reuse in the future Community
plugin.
git-svn-id: http://piwigo.org/svn/trunk@8734 68402e56-0260-453c-a942-63ccdbb3a9ee
