Display item count in sidebar

Summary I think it would be helpful if you could opt-in to show the item count in the sidebar for collections and bookmarks. This would be especially helpful for bookmarks. In our case, we heavily use global bookmarks to allow quick access to certain items (filtered). Basic Example For instance: A bookmark that shows Articles ready for review. If the (filtered) item count was shown in the sidebar, Editors would immediately know if there are any items to review, and how many. It would prevent having to open each bookmark and check if there are any items. Motivation It would speed up some content creation processes because you wouldn't need to open the entire collection to see how many items are in there. Detailed Design It could look something like this:  items beside a collection in the sidebar Should Have: • Automatic refresh • Lazy loading (for performance reasons) …