GRITS does not warn if there are unsaved changes on closing the application

[sena]

If you have unsaved changes in an open editor and try to close GRITS, there is a question dialog if you want to close the application but there is no other dialog warning about unsaved changes (it only exists for Experiment designer).

We need to look into E4 parts to see what needs to be done to cause that warning dialog (Do you want to save changes?) to pop-up.