Footer not being a module position should not be listed on the page if that's the case since the title clearly says 'Module Positions". Where I got footer_nav is from installing the demo and the footer module was set in the footer_nav position and since there is no footer module (ridiculous as it sounds) then it should not have been left in the demo at all, let alone assigned to a position that does not exist! With these two things both of which have nothing to do with the template stands to reason that they should not be in either of these two places since both are used to determine what can be done with the template. Not to have a footer position on a template makes about as much sense as having a car with no tires!!!