Adding RTL boolean value to jquery.mjs.nestedSortable.js - Might want to think about creating a value in the admin screens for IsRTL

src/Orchard.Web/Core/Navigation/Scripts/navigation-admin.js

@@ -31,6 +31,7 @@
         placeholder: 'navigation-placeholder',
         revert: 50,
         tabSize: 30,
+        rtl: window.isRTL,
         tolerance: 'pointer',
         toleranceElement: '> div',
 

src/Orchard.Web/Core/Navigation/Views/Admin/Index.cshtml

@@ -1,5 +1,6 @@
 @model NavigationManagementViewModel
 @using Orchard.Core.Navigation.ViewModels;
+@using Orchard.Localization
 @using Orchard.Utility.Extensions;
 
 @{ 
@@ -10,6 +11,9 @@
     Script.Include("jquery.mjs.nestedSortable.js").AtFoot();
     Script.Include("navigation-admin.js").AtFoot();
 }
+<script type="text/javascript">
+    window.isRTL = @((Html.Directionality() == "rtl").ToString().ToLowerInvariant());
+</script>
 
 <div id="save-message" class="message message-Warning">@T("You need to hit \"Save All\" in order to save your changes.")</div>