Versioned UI state (of link owner record) after link creation and deletion

[emteknetnz]

After a link is created and the underlying parent object is directly saved in the database, as part of this card, the versioned UI state should be correct

Examples:

• For a freshly published Page with a LinkField on it, when a new Link is added, the Page versioned UI state should be a clean Save button, and a dirty Published button.
• For a freshly published Content Block Page with a LinkField on a Content Block, when a new Link is added, the Content Block should have a modified versioned state, and the page its only should have a clean Save button, and a dirty Published button.

Notes

• Should be able to use the existing javascript change tracker to update this, rather than directly updating the save and publish buttons via jquery

Acceptance criteria

• The versioned state UI for pages is correct when new Links are added or deleted
• The versioned state UI for content blocks is correct when new Links are added or deleted
• If there are any unsaved changes on the page/block at the time the link is added/deleted, the save button should remain in a dirty state.

PR

• ENH Set Published button dirty state when Link is an unpublished state #193

New issues created

• JS change tracking is very inconsistent silverstripe-admin#1665

[sabina-talipova]

PR's merged. Task was completed.