Add nginx config to the repo

[eric-wieser]

Until then, I'll put it here:

server {
    listen unix:/societies/gcsu/public_html/room-picks/.apache.sock;
    server_name roompicks.caiusjcr.co.uk;

    client_max_body_size 100M;

    location / {
        try_files /dev/null @backend;
    }

    location @backend {
        proxy_pass http://unix:/home/efw27/projects/room-picks/nginx.sock;
        proxy_set_header Host $host:$server_port;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }

    location /static/ {
        root /home/efw27/projects/room-picks;
    }
    location /photos/ {
        root /home/efw27/projects/room-picks/uploaded_files;
        try_files $uri.jpg $uri.png $uri.gif @backend;
        expires 1y;
        access_log off;
        add_header Cache-Control "public";
    }
}

Not necessary, but makes it perform better.