Code review comment for lp:~mhall119/loco-team-portal/fixes-571483

 - Do you think it'd make sense to move grouped_venue_list() into models.py? It feels a bit more like here's-where-data-comes-from.
 - Are those print statements meant to stay?
 - Maybe it's because it's Ubuntu Release Day today, but I have a bit of a hard time understanding how the list is assembled.