developer.openstack.org page needs rework

[Diane Fleming]

The developer.openstack.org page has these issues:

- Cluttered and difficult to read
- Some obsolete links
- Redundant information

Specifically:

The links to books don’t match the titles of those books.
The repeated headings (SDK, Docs and Resources, and Community Links) are not necessary (IMO).
The "Application Programming Interfaces” heading could include one link to this page: http://developer.openstack.org/api-ref.html rather than listing all the services. The docs.openstack.org page already made this update, which I think is much cleaner.
The "Command Line Interfaces” section could be simplified – the link for “Getting Started Guide” is actually for OpenStack End User Guide. (that’s a general problem on the whole page – mis-titled links).

[OpenStack Infra (hudson-openstack)]

Change abandoned by Diane Fleming (<email address hidden>) on branch: master
Review: https://review.openstack.org/262680
Reason: don't fix

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/267278

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/267278
Committed: https://git.openstack.org/cgit/openstack/api-site/commit/?id=6042afbd2b0a01c2ac6eb3678aa555857878a446
Submitter: Jenkins
Branch: master

commit 6042afbd2b0a01c2ac6eb3678aa555857878a446
Author: Diane Fleming <email address hidden>
Date: Wed Jan 13 20:42:36 2016 -0600

    Rework index.html to remove mistitled links

    - Also, clean up prose a bit
    - Remove list of APIs and CLIs and replace with links to current
      information instead

    Change-Id: Ied2353b1aa3b150772bee4e908fac72d805aef7c
    Closes-Bug: #1530550