fix: folder redirect after creation

public/app/features/dashboard/create_folder_ctrl.ts

 import appEvents from 'app/core/app_events';
+import locationUtil from 'app/core/utils/location_util';
 
 export class CreateFolderCtrl {
   title = '';
@@ -19,7 +20,7 @@ export class CreateFolderCtrl {
 
     return this.backendSrv.createDashboardFolder(this.title).then(result => {
       appEvents.emit('alert-success', ['Folder Created', 'OK']);
-      this.$location.url(result.meta.url);
+      this.$location.url(locationUtil.stripBaseFromUrl(result.meta.url));
     });
   }