Use eager loading of owners and subscribers
Use eager loading of owners and subscribers

Always join the `user` attribute when loading owners and subscribers to
avoid the situation described in commit #52c370b

CityOfNewYork/NYCOpenRecords,CityOfNewYork/NYCOpenRecords,CityOfNewYork/NYCOpenRecords,CityOfNewYork/NYCOpenRecords,CityOfNewYork/NYCOpenRecords