Fix display of <ul>, <ol> in annotations

9be804d broke the display of <ul> and <ol> tags in annotation cards by
overriding a bit more than intended -- specifically, it set `list-style:
none;` on <li> in reset.scss when the Compass reset mixins didn't do
that.

This commit fixes the issue by only setting `list-style: none;` on <ul>
and <ol>, which means that the list styles in styled-text.scss can take
effect as originally intended.

h/static/styles/reset.scss

@@ -63,9 +63,11 @@ img::-moz-selection {
   background: transparent;
 }
 
-ul, li {
-  padding: 0;
-  margin: 0;
+ul, ol, li {
+  @include reset-box-model;
+}
+
+ul, ol {
   list-style: none;
 }