Perform redirect onmovenode()

When the current topic—or any of its ascendents—is moved in the `TreePanel`, the current page's URL will no longer be valid. As a result, if the editor then performs an action on that page, such as saving a change, it will fail since it will attempt to post back to the original URL.

To mitigate this, we now perform a redirect in `movenode()` if the `node` is the `currentTopic` or an ascendent of it. This will put the user on the same topic, but in its new location.

Author: JeremyCaney

OnTopic.Editor.AspNetCore/Areas/Editor/Views/Shared/_TreeViewScript.cshtml

@@ -97,6 +97,14 @@
             url: "/OnTopic/Move",
             data: { topicId: node.attributes.id, targetTopicId: newParent.attributes.id, siblingId }
           })
+          .done(function() {
+
+            //If current or ascendent topic, redirect to new location since the current URL is no longer valid
+            if (currentTopic.startsWith(node.attributes.path)) {
+              location.href = location.href.replace(oldParent.attributes.webPath, newParent.attributes.webPath);
+            }
+
+          });
 
         }
       }