Semantics Lists & Paragraphs Should Have Same Margin Bottom

### Goal

Any semantic List (`<ul>`, `<ol>`, `<dl>`) must (by default) have the same `margin-bottom` as Paragraphs.

### Background

Lists do not have the same `margin-bottom` as Paragraphs. Feels like a bug to me and lead CMS designer.

I once left myself a note "Hunt the `margin: revert` down in Core-Styles and consider killing it." which might have only been specific to nested lists.
