[Data story] Empty window selecting "edit icon" from a story created from another user

[mariaclaudia]

Subject of the issue

Selecting "Edit icon" from a story created from a different user, an empty window is displayed

Your environment

Chrome - Version 66.0.3359.139 (Official Build) (64-bit)

Steps to reproduce

• Log in https://dataportal-private.daf.teamdigitale.it/
• Select "Storie" from the left menu
• Select a story from the list that was created from a different user
• Select the "edit icon" on the right

Actual behaviour

I don't know if it's correct that the "Edit" button is displayed.
If it's correct, when I click on edit, an empty window is provided

Expected behaviour

If it's correct to have the edit icon, you can use the existing story as your initial point and then save it as a new one and it should not be displayed an empty window.

[mariaclaudia]

Now the content is correctly displayed, but a user can modify an existing data stories from another user (edit icon enabled).
Should this function create a copy of the original one maintaining both?
Should this function update the author from the original data story?

Which is the expected behaviour?

Thanks @raippl @giux78