moar docs

added docs for new v2 features
restructures modules bar and core/extras info into their own pages
changed templates to refer to the new pages
added some missing ansible.cfg options
more info on gathering setting

docsite/rst/modules_extra.rst

@@ -0,0 +1,23 @@
+Extras Modules
+--------------
+
+These modules are currently shipped with Ansible, but might be shipped separately in the future. They are also mostly maintained by the community.
+Non-core modules are still fully usable, but may receive slightly lower response rates for issues and pull requests.
+
+Popular "extras" modules may be promoted to core modules over time.
+
+This source of this module is hosted on GitHub in the `ansible-modules-extras <http://github.com/ansible/ansible-modules-extras>`_ repo.
+
+If you believe you have found a bug in this module, and are already running the latest stable or development version of Ansible,
+first look in the `issue tracker at github.com/ansible/ansible-modules-extras <http://github.com/ansible/ansible-modules-extras>`_
+o see if a bug has already been filed.  If not, we would be grateful if you would file one.
+
+Should you have a question rather than a bug report, inquries are welcome on the `ansible-project google group <https://groups.google.com/forum/#!forum/ansible-project>`_
+or on Ansible's "#ansible" channel, located on irc.freenode.net.
+Development oriented topics should instead use the similar `ansible-devel google group <https://groups.google.com/forum/#!forum/ansible-devel>`_.
+
+Documentation updates for this module can also be edited directly by submitting a pull request to the module source code,
+just look for the "DOCUMENTATION" block in the source tree.
+
+For help in developing on modules, should you be so inclined, please read :doc:`community`, :doc:`developing_test_pr` and :doc:`developing_modules`.
+