Undo bulk search&replace

[bosschaert]

Provide the ability to undo an incorrect/accidental bulk search and replace.

As requested:
'One possible future request for Self-service disaster recovery:
A feature to help recover a batch of content from a bad "find & replace" job'

[auniverseaway]

Thinking about a path to do this...

Maybe we version on every "replace" and then add version restore to the bulk tool.