See entity update in submission feed

[ktuite]

I think this image and set of notes in the release criteria is about the entity feed:
From release criteria (comment)

The submission feed will also have a note about how the submission updated an entity, but it probably wont show the diff.

[matthew-white]

I think #507 covers entries in the entity feed, but that's a great point that we'll also need to update the submission feed. What do you think about making this issue just about the submission feed?

• As with entity.create events, we'll need to handle the case where the entity is deleted.
• Will we need to do anything extra to surface and display errors from failed entity updates?

[issa-tseng]

looks nice, only thought is maybe it should like the feed item related to the submission if it can? okay if no

[matthew-white]

Just to be sure, you mean showing the diff, as well as information about the conflict (if there is one)? I think that'd be doable.

[matthew-white]

Would it look confusing if there end up being two different types of diffs on that page? At the moment, submission diffs and entity diffs look a bit different.

[srujner]

Tested With Success!

[dbemke]

Tested with success!