update the docs for 0.4.0

[Steve Martinelli]

1) add a docs job in tox
2) update the docs template
3) update release notes for 0.4 release

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/100754
Committed: https://git.openstack.org/cgit/openstack/python-openstackclient/commit/?id=89cbdd1ae1f0ed2e55ffdc43fbed07e417751455
Submitter: Jenkins
Branch: master

commit 89cbdd1ae1f0ed2e55ffdc43fbed07e417751455
Author: Steve Martinelli <email address hidden>
Date: Tue Jun 17 23:24:55 2014 -0400

    Add a docs job to tox.ini

    A noticed that there wasn't a docs option when running tox.
    Thought it would be a good idea to add one.

    Partial-Bug: #1331304
    Change-Id: I5af9ff5d5986ad546146c0fa73eb98256fd00c5f

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/100760
Committed: https://git.openstack.org/cgit/openstack/python-openstackclient/commit/?id=deaff7274e4d0782a7ddedb5c7d371fe5a9bb141
Submitter: Jenkins
Branch: master

commit deaff7274e4d0782a7ddedb5c7d371fe5a9bb141
Author: Steve Martinelli <email address hidden>
Date: Tue Jun 17 23:42:25 2014 -0400

    Update docs template

    To make things more consistent across all openstack projects, the
    developer docs should be upgraded to the newer template used by
    keystone and keystoneclient (and other projects).

    I dropped in the necessary static files and themes, and updated
    the config file to make the changes at build time.

    Change-Id: I5a268cff3cd5af29ad712705d540b9d1d6667d56
    Partial-Bug: #1331304

[OpenStack Infra (hudson-openstack)]

Change abandoned by Steve Martinelli (<email address hidden>) on branch: master
Review: https://review.openstack.org/100762
Reason: Let's use https://review.openstack.org/#/c/100910/ instead