Remove authbind

From now own we are using unprivileged ports, with
some help from NGINX.

This is because we need to deploy other servers with
https:443 in the same machine.

Signed-off-by: Martin Abente Lahaye <tch@sugarlabs.org>
Specify listening address

Add a configuration entry to set the listening
address explicitly.

Signed-off-by: Martin Abente Lahaye <tch@sugarlabs.org>
Release 0.3.2-1

Signed-off-by: Martin Abente Lahaye <tch@sugarlabs.org>