Add RSS link to News page

[LinkSake]

I took me a while to realize that the RSS feed was under /atom.xml. I think it's pretty standard to have some link pointing to it on the news page or the footer, something like this:

Reading the Zola docs it would just be a matter to add a link with href="{{ get_url(path="atom.xml", trailing_slash=false) }}" since the base.html file already has the feeds autodiscovery option.