Wishlist: Web client should provide user feedback on save

Current behavior:

When an item or item bucket is edited and saved, there is no obvious feedback for the user that the save has been successful. In a related note, there's no verification before the save that the user intended to save the item at that point - a useful safeguard against accidental clicks.

Expected Behavior:

Some form of alert - either JS popup or bootstrap alert div - that informs the user that the save has been successful. Also, a JS popup that confirms the user intends to save an item/bucket edit.