Content Management: Version History

[chillu]

Overview

As a demo user, I can view older versions of content and roll back to those, in order to get confidence that I can keep track of changes in a complex multi-user context such as a CMS

Acceptance Criteria

• I can list past page versions by different authors
• There is example pages with a mix of past versions, and clear sample content showing additions
• When I add/change/remove a block, the page is marked as modified
• There is a page with existing draft changes, and sample content which points out how to roll those back

Notes

• Will require https://github.com/open-sausages/silverstripe-versioned-snapshots
• Out of scope: Block version history (that's been disabled for some reason by CCs)