More work on the module/feature UI*

- reshuffled the related admin menu
- cleaned up a little of each module and feature list page

* still all based on the page list semantics

--HG--
branch : dev

src/Orchard.Web/Themes/TheAdmin/Styles/site.css

@@ -607,6 +607,9 @@ button.ibutton {
 .contentItems li.first {
 	background:#fff url(images/backgroundGradient.gif) repeat-x top left;
 }
+.contentItems li li.last {
+    border-bottom:0;
+}
 #main .contentItems li h3 {
     border-bottom:0;
     margin-top:0;
@@ -753,6 +756,7 @@ table.items, textarea, input.text, input.text-box,
     margin-top:1em;
 }
 .summary {
+    overflow:auto;
     padding:1.2em .4em;
 }
 .actions {