don't call browserplus externally on plupload

git-svn-id: http://svn.montala.net/svn/resourcespace@4500 c08608d7-6e46-0410-86ca-f2a6f1370df5
remove the headerinsert from plupload page as these are included in include/header.php

git-svn-id: http://svn.montala.net/svn/resourcespace@4501 c08608d7-6e46-0410-86ca-f2a6f1370df5