component/hugo, component/jupyter-py2: remove stack/slapos.cfg from extends list.

stack/slapos.cfg should be listed in the begining of software release extends list.

component/hugo/buildout.cfg

 [buildout]
 extends =
   ../golang/buildout.cfg
-  ../../stack/slapos.cfg
 
 parts =
   slapos-cookbook

component/jupyter-py2/buildout.cfg

 [buildout]
 extends =
   buildout.hash.cfg
-  ../../stack/slapos.cfg
   ../openssl/buildout.cfg
   ../jupyter/buildout.cfg
   ../../stack/monitor/buildout.cfg