add pylons_sphinx_latesturl sphinx extension and config

docs/conf.py

@@ -55,6 +55,7 @@ def nothing(*arg):
    'sphinx.ext.viewcode',
    'sphinx.ext.intersphinx',
    'sphinxcontrib.programoutput',
    'pylons_sphinx_latesturl',
    ]

# Looks for objects in external projects
@@ -124,6 +125,20 @@ def nothing(*arg):

# Options for HTML output
# -----------------------
pylons_sphinx_latesturl_base = (
    'http://docs.pylonsproject.org/projects/pyramid/en/latest/')
pylons_sphinx_latesturl_pagename_overrides = {
    # map old pagename -> new pagename
    'whatsnew-1.0': 'index',
    'whatsnew-1.1': 'index',
    'whatsnew-1.2': 'index',
    'whatsnew-1.3': 'index',
    'whatsnew-1.4': 'index',
    'whatsnew-1.5': 'index',
    'tutorials/gae/index': 'index',
    'api/chameleon_text': 'api',
    'api/chameleon_zpt': 'api',
}

html_theme = 'pyramid'
html_theme_path = pylons_sphinx_themes.get_html_themes_path()
@@ -133,7 +148,6 @@ def nothing(*arg):
    in_progress='false',
    # on previous branches/major releases true, else false
    outdated='true',
    latest_url='http://docs.pylonsproject.org/projects/pyramid/en/latest/',
    )

# The name for this set of Sphinx documents.  If None, it defaults to