Modify Grok's PHC navigation portlet

[Kamon Ayeva]

The PHC overview menu needs to be adjusted to accomodate the new site navigation proposed. This should be done by modifying the gzo.plonesmashtheme package (http://svn.zope.org/gzo.plonesmashtheme/).

This also suggests improving the documentation section homepage so that a user can quickly find the documentation they need. (We can learn from the work the Plone doc team did in that area for plone.org.)

Some details sent by Kevin via the mailing list::

"""
gzo/plonesmashtheme/portlets/grokdoc.py and phc_grok.pt make up the Documentation portlet that gets presented on the web site. You can modify the existing 'phc_grok.pt' template to suit the new/improved navigation (feel free to just rip out the topic-based listing stuff if it's undesirable). We can't use the same Navigation portlet as the rest of the site, since that Portlet just displays content as it's structured within Plone. But if you put mirror the top level navigation elements statically in the documentation-navigation portlet that should be fine, it's not like we are changing the top-level navigation very often.

You can also modify gzo/plonesmashtheme/browser/dochome.pt which is the documentation home page template to reflect the new documentation structure.
"""