Jekyll is a tool that can be used to build static HTML websites using a HTML template engine etc., however it's not perfect by itself, and the documentation for the plugins is rather crappy at times.
Unfortunately, you will need to install ruby (including -devel packages) and do whatever you need to do to get RubyGems installer.
More about Jekyll: http://jekyllrb.com/
Jekyll Asset Pipeline
Definitely worth installing is jekyll-asset-pipeline, it makes sure your CSS and JS files are combined and compressed, as well as making sure (with a little help) that LESS, SASS, CoffeeScript etc. is converted prior to this.
To get this working, read up on https://github.com/matthodan/jekyll-asset-pipeline/
Jekyll Asset Pipeline and LESS
To get LESS compilation working with Jekyll Asset Pipeline, you need to add some code to the jekyll_asset_pipeline.rb file you already created. I tried to look for a ready solution, but eventually ended up combining two-three solutions into something that works.
It uses the node.js lessc compiler to process the files and is written in a fairly unoptimal way in general, because I haven't got a clue of how to write Ruby and this was the first thing that I got to work.
This is the complete contents of that file for me now: