updated buildout

software/ipython_notebook/software.cfg

 [buildout]
 versions = versions
-extends = 
+extends =
   ../../stack/slapos.cfg
   ../../stack/monitor/buildout.cfg
   ../../component/ipython/buildout.cfg
@@ -8,6 +8,7 @@ extends =
   ../../component/scikit-learn/buildout.cfg
   ../../component/pandas/buildout.cfg
   ../../component/openssl/buildout.cfg
+  ../../component/jupyter_renderjs.cfg
 parts =
   monitor-eggs
   slapos-cookbook