Set list-style-type in CSS.

It was obviously wrong that the <ul> on the Bedstead Web page had 
circular bullets.  The current CSS Lists and Counters working draft, 
<http://www.w3.org/TR/2014/WD-css-lists-3-20140320/>, allows for setting 
the bullet to a string, and Firefox 54 supports this, so use it in the 
CSS for Bedstead's Web page.

bedstead.css

@@ -25,6 +25,10 @@ h1, h2 {
     margin-left: -24px;
 }
 
+ul {
+    list-style-type: "\2022  ";
+}
+
 @font-face {
     font-family: Bedstead;
     font-stretch: expanded;