Right now, when clicking on the TwoColConflict simulation page's "simulate publish button" (of the new paragraph-based conflict handling), you reach an actual edit page with a preview of the changes. Clicking on save on that page would not simulate, but actually save the edits made here. Under no circumstances do we want users of the simulation tool to be editing "for real".
 On the simulated edit conflict page, there are two buttons "simulate publish" and "show changes"
 When clicking on "show changes", users see a diff above the rendered preview of the edit conflict.
 When clicking on "simulate publish", the user is redirected to a page that looks like a saved page, i.e. the user sees the whole content page in its usual representation
 Actually, no content has been saved though
 Below the content, there is the an OOUI-style "Show changes" button