Add an editable title to pinned posts

When a post is pinned to a conversation, what the pinned side-tab shows is the first few words from the pinned post. But unfortunately, those first few words generally don't identify what is in the pinned post -- e.g. it might start with "I thought I'd share with everyone...". So the list of pinned posts is kind of useless when you're looking for something specific since you have to tap on each of them individually to see what's inside them. It would be super helpful for a pinned post to have an editable title so that the pinner can clearly identify what it is he's pinning and others can find useful information very easily. So instead of showing "I thought I'd share with everyone...", the pinned post would show the title I entered when I pinned it (e.g. "Steps to create a ticket" or "Resource List")