Episerver - update 358

Keeps the side panes available when quick-editing a block, to enable drag and drop of pages and assets into properties of the block.

Exception is thrown when FindSubscribersAsync returns duplicated users.

The Link Status report shows if there is a broken link on a specifik pageor block, but it does not indicate in which language. 

Steps to reproduce:

1. Go to edit view.
2. View tracker in the browser DevTools.

Actual results:

Events that should not be displayed are displayed.

Solution:

Ajax tracking has been disabled in Platform Navigation.
 

Steps to reproduce:

1. Create a project.
2. Navigate to the Export UI in CMS admin view.
3. Select the root page. Select "sub items" and "export files that the pages link to."
4. Click Export.
5. Delete any page. 
6. Check the # of rows in tblNotificationSubscription

   select count(*) from tblNotificationSubscription
   

1. Navigate to import screen.
2. Select the file from the previous import. Use the "update existing items with matching ID" option.
3. Begin import.
4. Check the # of rows in tblNotificationSubscription.

Expected result:
No increase in rows.

Actual result:
Rows increase.