find the last 10 entries in the database and create the main
    page.
    Each entry in has an doc_id, so we only get the last 10 doc_ids.

    This method also updates the ATOM feed.

def update_index(entries):
    """find the last 10 entries in the database and create the main
    page.
    Each entry in has an doc_id, so we only get the last 10 doc_ids.

    This method also updates the ATOM feed.
    """
    context = GLOBAL_TEMPLATE_CONTEXT.copy()
    context['entries'] = entries
    context['last_build'] = datetime.datetime.now().strftime(
        "%Y-%m-%dT%H:%M:%SZ")

    list(map(lambda x: _render(context, x[0],
                               os.path.join(CONFIG['output_to'], x[1])),
             (('entry_index.html', 'index.html'), ('atom.xml', 'atom.xml'))))