Rollback to html:a (merge html:link and html:anch)

As OscarGodson said:
You could make this into it's own PR and ask people how they like it, but I don't see any benefit to this over just allowing a/link. In both cases it makes semantic sense. If we had a link element it'd mean link to this page, and this section. You'd also need links like http://someothersite.com/#foo to work anyway so making them totally different links seems confusing.