Nmap-scripts cleanup

I’ve cleaned up the Nmap scripts page a bit to better reflect reality. Most of the scripts published on that page have been commited to the Nmap development release. I’m actively working on getting the remainder commited to. Once the scripts have been commited, they’re no longer maintained here. So, in order to try them out I recommend you to install the latest development release of Nmap. In order to do so, follow the steps outlined here.