Rearrange existing documentation to fit the new standard layout

For more detail, see the doc migration spec.
http://specs.openstack.org/openstack/docs-specs/specs/pike/os-manuals-migration.html

Change-Id: I142a686a3abbe65138a9f3296cd21fc21fbd763a

doc/source/contributor/index.rst

@@ -23,9 +23,28 @@
       '''''''  Heading 4
       (Avoid deeper levels because they do not render well.)
 
+=================
+Contributor Guide
+=================
+
+Neutron Policies
+----------------
+
+.. toctree::
+   :maxdepth: 2
+
+   policies/index
+
+Neutron Stadium
+---------------
+
+.. toctree::
+   :maxdepth: 2
+
+   stadium/index
 
 Developer Guide
-===============
+---------------
 
 In the Developer Guide, you will find information on Neutron's lower level
 programming APIs. There are sections that cover the core pieces of Neutron,
@@ -34,12 +53,32 @@ also subsections that describe specific plugins inside Neutron. Finally,
 the developer guide includes information about Neutron testing infrastructure.
 
 .. toctree::
-    :maxdepth: 2
-
-    effective_neutron
-    development.environment
-    contribute
-    neutron_api
-    client_command_extensions
-    alembic_migrations
-    modules
+   :maxdepth: 2
+
+   effective_neutron
+   development_environment
+   contribute
+   neutron_api
+   client_command_extensions
+   alembic_migrations
+   testing/index
+
+Neutron Internals
+-----------------
+
+.. toctree::
+   :maxdepth: 2
+
+   internals/index
+   modules
+
+Dashboards
+----------
+
+There is a collection of dashboards to help developers and reviewers
+located here.
+
+.. toctree::
+   :maxdepth: 2
+
+   dashboards/index

doc/source/contributor/testing/index.rst

@@ -31,7 +31,7 @@ Testing
    :maxdepth: 2
 
    testing
-   fullstack_testing
-   testing_coverage
+   fullstack
+   coverage
    template_model_sync_test
    db_transient_failure_injection

doc/source/contributor/testing/testing.rst

@@ -23,4 +23,4 @@
       '''''''  Heading 4
       (Avoid deeper levels because they do not render well.)
 
-.. include:: ../../../TESTING.rst
+.. include:: ../../../../TESTING.rst

doc/source/index.rst

@@ -14,8 +14,8 @@
       License for the specific language governing permissions and limitations
       under the License.
 
-Welcome to Neutron's developer documentation!
-=============================================
+Welcome to Neutron's documentation!
+===================================
 
 Neutron is an OpenStack project to provide "network connectivity as a service"
 between interface devices (e.g., vNICs) managed by other OpenStack services
@@ -47,22 +47,6 @@ Networking Guide
 
    admin/index
 
-Neutron Policies
-----------------
-
-.. toctree::
-   :maxdepth: 2
-
-   policies/index
-
-Neutron Stadium
-----------------
-
-.. toctree::
-   :maxdepth: 2
-
-   stadium/index
-
 Neutron Feature Classification
 ------------------------------
 
@@ -71,26 +55,13 @@ Neutron Feature Classification
 
    feature_classification/index
 
-Developer Docs
---------------
-
-.. toctree::
-   :maxdepth: 2
-
-   devref/index
-   devref/testing_index
-   devref/neutron_internals
-
-Dashboards
-----------
-
-There is a collection of dashboards to help developers and reviewers
-located here.
+Contributor Guide
+-----------------
 
 .. toctree::
    :maxdepth: 2
 
-   dashboards/index
+   contributor/index
 
 API Extensions
 --------------