Add a 'back to previous status' button on admin status edit
Will move back to the most recent status held by the manuscript, not necessarily the previous one in the status list of a normal workflow.
A manuscript in 'submission-error' will just have a 'cancel submission error' button that does the same function. Other statuses will have a 'send back to previous used status' button AND a 'send back to most recent routable state' button