Added module documentation visualization and fixed haml top bar

Hello,

in order to have a better visualization of the module in the web page I have added the README.md or README.markdown files included in the own compressed module, and parsed to html using redcarpet library (https://github.com/vmg/redcarpet) to be conveniently shown.

I have also fixed some issues with the top bar, which didn't correctly show the title of the modules.

Best regards,
José Molina Colmenero
It sorts all modules by full name. I tried to do it in the server but because of problems with ruby versions it ended up being a pain in the neck, so it's finally the client who is going to do it.