This switches to using the more modern collection view diffable data source API. Also I moved the action cells into their own section so we don't need to do arithmetic to determine whether or not a cell is an action cell or a device cell.
This switches to using the more modern collection view diffable data source API. Also I moved the action cells into their own section so we don't need to do arithmetic to determine whether or not a cell is an action cell or a device cell.