#7 Make the wizard workflow "circular"

[Alessandro Portale]

A suggestion by Berend, a Mac user

After saving the step, it should be easy to load a new image and generate a poster with the same settings as before. So the currently disabled "Next" button in the last wizard step would become a "Start again" (or similar) button. And the currently disabled "Back" button in the first step could become "Save now" button.

A workaround to achieve this functionality is to drop a new image on the PosteRazor while you are in the last step.