A new look for the Jolie documentation pages

The Jolie documentation pages, which you can find at docs.jolie-lang.org, got a fresh new look! They are now powered by GitBook, which gives us better accessibility (e.g., font size adjustments, different colour schemes). You can now choose to browse the documentation online, or even download it as a PDF.

Perhaps even more importantly, it is now very easy to edit (or propose changes for) the whole documentation, even with an online editor. This will help us in speeding up the process of better documenting Jolie in the future.

A big thank you to our master of websites Saverio Giallorenzo for pulling out most of the work!