Some more Nginx fiddling and some misc

Hey, Got some more commits for you :).

Not sure about commit's 9819116 and 270c53d. Commit 9819116 add's 2 Nginx command's that act the same as the apache command: a2ensite and a2dissite. You can use them to enable or disable a vhost.

For instance you got a vhost in sites-availabe named "site-one". The you can can do this to enable it: `sudo ngxen site-one` or if you want to disable it `sudo ngxdis site-one`. This basicly just add's or delete's symlink's between site-available and site-enabled. Credits goes to: https://blog.kamal.io/post/nginx-apache-like-server-structure/ .

(I rebased everything on your current development branch.)