Change logo link to ipython.org; fixes #1366

docs/source/_templates/layout.html

@@ -11,7 +11,7 b''
 {% block relbar1 %}
 
 <div style="background-color: white; text-align: left; padding: 10px 10px 15px 15px">
-<a href="{{ pathto('index') }}"><img src="{{
+<a href="http://ipython.org/"><img src="{{
 pathto("_static/logo.png", 1) }}" border="0" alt="IPython Documentation"/></a>
 </div>
 {{ super() }}