Updating the markup for the content item edit template.

- Includes an additional zone: Actions
- Added conditional zone inclusion and more markup so it's a bit more flexible

--HG--
branch : dev

src/Orchard.Web/Core/Contents/Views/Items/Content.Edit.cshtml

@@ -1,8 +1,21 @@
-<div class="sections">
-    <div class="primary">
-        @Display(Model.Content)
+<div class="edit-item">
+    <div class="edit-item-primary">
+        @if (Model.Content != null) {
+            <div class="edit-item-content">
+                @Display(Model.Content)
+            </div>
+        }
     </div>
-    <div class="secondary">
-        @Display(Model.Sidebar)
+    <div class="edit-item-secondary">
+        @if (Model.Actions != null) {
+            <div class="edit-item-actions">
+                @Display(Model.Actions)
+            </div>
+        }
+        @if (Model.Sidebar != null) {
+            <div class="edit-item-sidebar">
+                @Display(Model.Sidebar)
+            </div>
+        }
     </div>
 </div>