Update blog template & styling

Use less for css powered by npm 'less' & pip webassets through the
pelican-plugins.

The works because I've done:

    pip install nodeenv
    nodeenv -p
    npm install less
    git clone https://github.com/getpelican/pelican-plugins

Should really record that somewhere.
Content: 23:26 26-10-2014
Build: 23:26 26-10-2014
Merge branch 'publish'