Updating the content item edit's publishing controls.

- if the content item is not "Draftable" there is a single save button that saves and publishes
- if the content item is "Draftable" there is still the save button, which saves a draft, and a publish now button for immediate publishing
- if there's a part on the content item that handles scheduling (like Orchard.PublishLater) then the draft saved should be scheduled for publishing

--HG--
branch : dev

src/Orchard.Web/Modules/Orchard.Users/Views/Admin/Edit.cshtml

@@ -19,6 +19,6 @@
     @Display(Model.User)
 
     <fieldset>
-        <input class="button primaryAction" type="submit" value="@T("Save") " />
+        <button class="primaryAction" type="submit">@T("Save")</button>
     </fieldset>
  }