update: Rewrite permissions

class EveryoneCanRead(Model):
    class Meta:
        anonymous_perms = ['view']
# Because default owner & auth are inherit.

class NoOneCanUseMe(Model):
    class Meta:

class AuthOnly(Model):
    class Meta:
        anonymous_perms = []
        authenticated_perms = ['view', 'add']
        owner_perms = ['inherit', 'change', 'control', 'delete']

class Notifications(Model):
    class Meta:
        anonymous_perms = ['add']
        authenticated_perms = []
        owner_perms = ['view', 'change']

class OhNoOwnerCantRead(Model):
    class Meta:
        anonymous_perms = ['view']
        authenticated_perms = ['inherit', 'add']
        owner_perms = ['change', 'control', 'delete']
# I supposed this is bad, but we don't want to always inherit permissions..?