Updated everything to ubuntu:14.04 and postgres 9.3

* Upgraded the base images to be the new LTS image from ubuntu (14.04)
* Upgraded PostgreSQL to 9.3 as it was the latest on 14.04
* Updated the config files to match what is in the 9.3 default installs.
* Updated the Docker file to chown the config files to the postgres user correctly.

If you don't want to support newer versions like this, I can just publish it to the docker registry and point back to yours for the existing version if you like.