add module for m0n0wall 1.33 CSRF root reverse shell exploit #824

Can someone verify, the adjusted php-reverse-shell.php?  I changed it with permision of Pentest Monkey so that a port number and a ip address can be passed dynamically.  Think this is no problem, since we want to exploit the machine anyway.  I also added the license of php-reverse-shell to the module directory, can someone confirm this is ok?

Cheers,
Bart