Security Mechanisms

100% functional. Uses bCrypt
(http://en.wikipedia.org/wiki/Blowfish_(cipher)).

I left everything commented out for now since it will break the login
function unless you edit the database itself. To enable the encryption,
do the following in log_in.php and class.php:

1. Where you see // NEW SECURITY THINGS, uncomment all lines until you
reach // END NEW SECURITY THINGS.
2. Comment out all lines that have // COMMENT OUT FOR SECURITY TO WORK
at the end of the line.
Merge branch 'master' of https://github.com/fmcat/CSN