Selective bulk sorting

Bulk containers on Sklotopolis have the option to sort items by quality (items are categorized into groups of 10ql). By default, sorting is enabled on all supported containers (crates, bulk storage bin, food storage bin). Sorting can be disabled by right clicking a bulk containers and using the disable sorting option, which will put (unsorted) behind the container's name. Once disabled, sorting can be re-enabled using the enable sorting option, which will put (sorted) behind the container's name.