o format of email
o max_execution_time equal to 0
o -f with only adress mail
o use of standard function get_webmaster_mail_address
2 news $conf parameters.
Merge branch-1_6 r1529:1530 into BSF
git-svn-id: http://piwigo.org/svn/trunk@1531 68402e56-0260-453c-a942-63ccdbb3a9ee