GUI: File Save should not ask repeatedly for the same filename (Quicksave)
When the experiment was already saved in a previous step of the workflow and the user hit File->Save to save the latest step it should not ask again to enter the same filename a third, fourth, fifth etc time. The user most likely wants to save the last results/steps in the same file as before. It's maybe also a good idea to introduce 'File -> Save As' Menu to also let this option to always save in different files as before. But most often a quicksave to allow the user to just save and then go on with their experiment would be nice to have.