cubicweb-forge #3278461 interleave the display of comments and workflow changes for tickets [open]

The default appearance of workflow history is a table with state changes (from_state / to_state) and comment. On the other hand, tickets can have comments. So there's actually two places where comments could appear. This does not ease following the activity of a ticket nor the flow of comments.

I would suggest to display workflow changes inline with comments (with a different style), so that one could follow the history of a ticket by date independently of the type of activity (i.e. comment or workflow change).

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