Filter for Public/Customers only/Controlled access

[hissingpanda]

Had a great feedback suggestion from the android app to have a flag for public restrooms. This would be especially useful for college campuses, where some restrooms are in dormitories that require keypasses. Probably something that's been talked about, but I didn't see an issue for it.

[tkwidmer]

This is gtg, and i'd like to see this happen.