Live Support v1.2c

for osCommerce Online Merchant v2.2

Just 2 quick fixes to this great contribution: The zip file includes the single fix file from below (it was a bit tricky to figure out which live_support.php the last contribution was meant to replace). In addition, a minor change to admin/ls_commwindow.php - it was missing a '.php' which was causing a 404 when attempting to close the admin window.