Create a views-based page with projects narratives

The reference is this.

Information architecture for hackathon sessions is: they are encoded as events in the Harmonious Hackathon project. The view underpinning this page is built accordingly.

Worth 25% of a ticket to LOTE4.

Done, more or less

I would have liked to do this better, but I met with quite a few problems. However, my page is ready and it looks reasonably good: if I can find a way to add an “attend” button right in the view, I will be a happy man.

@JamesL, @Rémy, @katalin: is that acceptable?

Now really done :slight_smile:

With a lot of help from @Matthias. Documentation available here (item 9). Ping @JamesL @Rémy