Allow passwordless users.
Mention how to create passwordless users.
Implement database removal

A slightly modified version of change done in vjanelle's fork
Add Marcello Barnaba to the contributor list.

Marcello has come up with a number of elegant solutions when porting
this module to SuSE. Whilst I've not used his commit directly, seeing
his work has certainly helped to make this a better package.
Do not start or manage the Postgresql daemon.

In some situations, for example, a clustered environment when and how to
start Postgresql might be taken by another service or system.

If you specify 'manage_service' to be false, a policy-rc.d(8) shell
script is installed that will prevent the Debian / Ubuntu service from
starting at install time.

Additionally the entire service definition is removed, so that other
things can not trigger the service to run (or stop) unexpectedly.
Debian Wheezy fixes
Lintian fixes