Collapse/hide updates

The update panels for our pulses get crowded quickly. So we’d like to be able to hide or collapse an individual update and its associated replies, or move them to the bottom of the panel, when that particular conversation is marked as “closed” (but without deleting anything, b/c we need to keep the history). This would make scanning the panel for open items faster, reducing the risk of letting items fall through the cracks. Right now we have to pin all new updates to the top, and unpin each when closed, which is not easy for all staff to remember consistently.