Pyramid debugtoolbar

This PR is a quick fix for issue with the `pyramid debugtoolbar`. Our setting are working with the version 1 of https://github.com/Pylons/pyramid_debugtoolbar but not the version 2 release this spring and the older version we were using was not pinned down.

You should erase any version of the _pyramid_debugtoolbar_ greather than 2 you have and re-rerun the `zc.buildout`

    $ rm -rf buildout/eggs/*
    $ ./buildout/bin/buildout -c <our config> 
    $ sudo apache2ctl graceful