Select all/None in consumable menu

More of a (most likely easy to fix) annoyance than a major issue.

When you click the food icon at the top of the consumable window, it will enable the food item for all dupes, unless it was already selected for all dupe, in which case it will unselect it for all dupes.

If a dupe is in the command capsule, his "consumable preference" can't be changed.  So if that dupe has a food unselected and all other has it selected, clicking on the food icon will do nothing. It won't check any new checkbox because all the modifiable checkboxes are already checked. And it won't unselect all because not all checkboxes are selected. Then, the only way to uncheck all checkboxes is to do it manually one by one.

Suggested fix : Don't consider the dupes in command capsules to consider if you should uncheckall. (Probably should ignore all dupes for which the checkbox is unmodifiable)