This reverts commit 596051a5.

disable ftp by default so that the port is not open

The following init scripts have been modified to use procd:
* atftpd
* vsftpd

The following services are being advertised:

* atftpd: tftp
* nginx: http, https, http-alt, pcsync-https
* vsftpd: ftp
* xl2tpd: l2tp

* create /etc/vsftpd directory for extra config files
  like userlist, certificate and key
* modify config file to use that directory
* include that directory in conffiles for backup

* use PKG_HASH
* update URL

Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>

I did not define myself as the maintainer, as the package already had one.
Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>