Improve/Fix seed script

Seed script fails partway through (this was brought up in #419).

Also, it would be nice if we could add another script or a flag option or what have you for 'quick mode', which woudl auto generate app configs and other metadata and generate some fixed number of database items
if you're going to allow the creation of zero equipment objects, move this block down to just above reservations (leaving reservations as the last block). that way you can exit here on ```entered_num == 0``` via an else and not skip the generations which do not depend on equipment objects.