Un-namespaced Ansible variables.

As we don't have duplicated configurations, this would allow vars
to be easier overridable (i.e. within inventory file).
Configure PostgreSQL to allow connection from appservers.

Rewriting pg_hba from template to allow connection from any app
servers and make sure postgresql listens to the IP we will be using
to connects to.
Initial assets compilation.

Install nodejs for assets compilation using brunch. Static assets
path will be created on the first setup.
Update database credential in test.

Still a stopgap measure.
Autorun brunch watch in development.

Using supervisord to monitor brunch watch.