Cloud of tags and looping over them

[gradha]

Add some way to get the list of tags and create a cloud of them, so you can iterate in default.html or article.html and hiperlink them. This is seen at the bottom of http://picheta.me/articles/2013/08/a-new-blog-with-a-new-beginning.html. At least ipsum could generate a tags.html with sitemap functionality.