Diagram is not displayed

[CamiAndrei]

Steps to reproduce with no license added:

1. Login with superadmin
2. Add a diagram
3. Login with a simple user or admin
4. Go to diagram
   The diagram is not displayed. This is a possible result after the license expires and the users are not able to see the license.

[mflorea]

The latest version of the Licensing Application will display a message when the page cannot be properly displayed because a required license is missing. I don't see what we could do otherwise. The user owns the diagram he created (he can do whatever he wants with the diagram page and the diagram "code") but in order to view the rendered diagram he needs to have a license.