Allow zone and all regions within to not have and grid classes applied.

I am working on an Omega-subtheme where a request has come in to have a zone and all regions within the zone to not have the grid applied.

In this particular case, having the full width wrapper around everything is not sufficient; the zone and regions all need to be full page width.

I can remove the grid classes from the zone and regions inside a template_process_zone / template_process_region, but since I would have to hardcode zone/region names, any change on the UI side would need to be propagated to the code. Not earth shattering, but annoying.

Having a "none" option for the column count and width selects (and probably suffix/prefix/push/pull) would be really handy in this situation.