EPAS: create new and improved Quick start template

[drothery-edb]

Follow the model established by BigAnimal and PGD to step people through:

1. Installing
2. Configuring
3. Connecting

Leaning on existing topics although some may need enhancement (such as Connecting to your database needs a Connecting to a client section)

[josh-heyer]

This could almost be an index page - really just needs paragraphs with links and then move the short example from the install instructions into these along with links out to further examples.

[djw-m]

Quickstart should always aim to deliver a basic useful configuration which can be used for development (at least).