Choose single parent for categories that have multiple parents

[thebnich]

Looking at the Yelp categories, some categories have multiple parent categories. Example: "Art Galleries" falls under both "Arts & Entertainment" and "Shopping" (which will land the place in either Discover or Shop, respectively). Since we're now assigning each place to just a single filter, we should go through each of these categories with multiple parents to make sure it gets categorized correctly. It looks like there are only 20 or so we'll need to go through.

I'll update this issue with a listing of all such categories so we can go through them.

[thebnich]

Categories with multiple parents here:

CATEGORY - PARENTS
cosmetics - shopping, beautysvc
deptstores - fashion, shopping
eltern_cafes - restaurants, food
galleries - shopping, arts
hair_extensions - hair, beautysvc
hotels - eventservices, hotelstravel
isps - homeservices, professional
jazzandblues - arts, nightlife
kiosk - shopping, food
medicalspa - health, beautysvc
musicvenues - arts, nightlife
perfume - shopping, beautysvc
sportswear - fashion, sportgoods
stationery - eventservices, artsandcrafts, flowers
swimminglessons - fitness, specialtyschools
wineries - arts, food

Assuming we want to keep each place under exactly one category, let's choose just one parent for each.