Update clouddocs-maven-plugin to pull menu text from doc source

[Diane Fleming]

Update apipage-main.xsl to pull text and links for navigation menu from doc source rather than hard-coding the menu text and links.

[Anne Gentle (annegentle)]

https://review.openstack.org/#/c/65502/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/65614
Committed: https://git.openstack.org/cgit/openstack/api-site/commit/?id=c830e52fff7891edc7b4fc686473c5cb2131ce54
Submitter: Jenkins
Branch: master

commit c830e52fff7891edc7b4fc686473c5cb2131ce54
Author: annegentle <email address hidden>
Date: Wed Jan 8 22:13:42 2014 -0600

    Updates pom.xml to use 1.12.2 version of clouddocs-maven-plugin

    Change-Id: If843139c34e13d39a7336287057c8cf4fb732539
    Closes-bug: 1267174

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/72195

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/72195
Committed: https://git.openstack.org/cgit/openstack/api-site/commit/?id=7837131f36c6ea30e59fdf3a6731d0abc999b5c5
Submitter: Jenkins
Branch: master

commit 7837131f36c6ea30e59fdf3a6731d0abc999b5c5
Author: Diane Fleming <email address hidden>
Date: Sun Feb 9 19:05:24 2014 -0600

    Change to allow read of service names from doc file

    - Clouddocs-maven-plugin reads service names
      and links to related API ref pages
      from the api-ref/src/docbkx/preface.xml file
    - Added an xml:id to the itemizedlist
      in the preface.xml file to identify it as
      the service names/links source
    - Added preface to every API reference page
      so that each page can auto-generate the
      sidebar menu from the itemizedlist in
      the preface

    Partial-Bug: #1267174

    Change-Id: I8871c804c2c93f4f7625fc92ed0448de40ccb751
    author: diane fleming