Update list styles

- Remove left padding and bullets from lists as default
- Update typography page to show example styles
- Add margin to numbered and bulleted lists
Merge branch 'gh-pages' of github.com:alphagov/design-patterns into gh-pages

Conflicts:
	assets/sass/govuk-helper/_lists.scss
	assets/stylesheets/base-ie6.css
	assets/stylesheets/base-ie7.css
	assets/stylesheets/base-ie8.css
	assets/stylesheets/base.css
	assets/stylesheets/example-form/example-form.css
	assets/stylesheets/example-grids/example-grids-ie6.css
	assets/stylesheets/example-grids/example-grids-ie7.css
	assets/stylesheets/example-grids/example-grids-ie8.css
	assets/stylesheets/example-grids/example-grids.css
	assets/stylesheets/example-typography/example-typography-ie6.css
	assets/stylesheets/example-typography/example-typography-ie7.css
	assets/stylesheets/example-typography/example-typography-ie8.css
	assets/stylesheets/example-typography/example-typography.css