set list-style to none for breadcrumbs to resolve cross browser issues per #2224

docs/assets/css/bootstrap.css

@@ -2859,6 +2859,7 @@ button.btn.btn-small, input[type="submit"].btn.btn-small {
 .breadcrumb {
   padding: 7px 14px;
   margin: 0 0 18px;
+  list-style: none;
   background-color: #fbfbfb;
   background-image: -moz-linear-gradient(top, #ffffff, #f5f5f5);
   background-image: -ms-linear-gradient(top, #ffffff, #f5f5f5);

less/breadcrumbs.less

@@ -4,6 +4,7 @@
 .breadcrumb {
   padding: 7px 14px;
   margin: 0 0 @baseLineHeight;
+  list-style: none;
   #gradient > .vertical(@white, #f5f5f5);
   border: 1px solid #ddd;
   .border-radius(3px);