Coedition: article in edition mode by a user can be deleted by the second user
Scenario 1
- user 1 open ck editor for an article
- user 2 edits the Table of Content and is deleting the article for which the co-edition icon is shown
- user 1 saves his work on the edited article and upon reloading the article disappears
Scenario 2
- user 1 open ck editor for an article
- user 2 chooses to delete the co-edited article by clicking on the trash bin button from the action menu
- user 1 saves his work on the edited article and upon reloading the article disappears and the text "null" is shown instead