Unordered lists inside ordered ones render ordered

CSS `ol li { list-type: decimal }` makes unordered lists inside ordered ones display as ordered: http://cssdesk.com/cAGg5

Since `ul li { list-type: disc }` and `ol li { list-type: decimal }` are the browser defaults, I believe we don't need these rules
Merge pull request #45 from mdesantis/patch-1

Unordered lists inside ordered ones render ordered