[super] Refactor and improve documentation (v1.7)

[rgrp]

Documentation is key to the success of projects!

Move material into main docs from wiki

• ​http://wiki.ckan.org/Writing_asynchronous_tasks

Create a User Guide

Basic step-by-step on getting started with CKAN (See start on set of slides here e.g. ​http://blog.thedatahub.org/2012/03/02/tutorial-publish-data-with-the-datahub/)

• Sign up
• Publishing data
• Authorization and workflows

Break into sections

Suggest something like:

# General
* Intro
* Conceptual Overview
* What CKAN helps you do (http://ckan.org/)
* FAQ ? (or point to the wiki)

# For Administrators

* Installation and Setup
  * Configuration options
* Customization - Theming etc
* Authorization and Workflows
* Storage

# For Users (Publishers, Data Wranglers, etc etc)
* Walkthrough of publishing a dataset
* Storage
* API (see Developers section)

# CKAN Developers

* Domain Model
* API
* Extensions
* i18n

CKAN Developers
* Buildbot