ARR: Let assigned SACs/ACs add or remove the authors from the comment invitation

[melisabok]

When reviews are late, the SAC/AC can add the authors so they can reply to the reviews. We would need to do the following:

• Create an invitation to edit the comment invitation readers and invitees
• The UI that shows the invitation info should render this as a button
• The SAC/AC console should render a link to the invitation UI
• Question: what happens when the PCs change the comment stage? do we overwrite the SAC/AC changes?

[annargrs]

Sorry, I don't quite get the first point (not very familiar with OR backend).

What we need is for AC/SAC to be able to override the conference-wide deadline for the author response for specific papers. This is for the cases when reviewers came so late, that the authors are severely disadvantaged and need to be given more time to respond. I would guess that the ACs/SACs would typically do this BEFORE the rebuttal ends for everybody, and their specified deadline for author response would need to take priority over the generic one.