Try using tags for distribution gallery pages

[OriolAbril]

I think it would be nice to have tags for the distribution gallery pages with general info like: continuous/discrete, bounded/unbounded, degrees of freedom, symmetry...

I will try using this extension: https://github.com/melissawm/sphinx-tags and see how it goes. As this is sphinx and it is a static site, fancy filtering won't be really possible, but in addition to having all the tags on the page, each tag should have its own page so people can see all distributions that are symmetric on the same page for example.