add net_logo_package_name to settings.sample.yml
add net_logo_package_name to settings.sample.yml

used by omtml_helper to choose correct version
of the netlogo.

otml_helper will pick a default (netlogo 4) if not
specified in the settings.yml file.


concord-consortium/rigse,concord-consortium/rigse,concord-consortium/rigse,concord-consortium/rigse,concord-consortium/rigse,concord-consortium/rigse