refs https://github.com/TryGhost/Team/issues/1358
- added acceptance tests for members settings screen
- subscription access management
- default post access management
- free tier management
- fixed `enableLabsFlag()` test helper overwriting existing flag settings when enabling another one
- updated API mocks and fixtures
- matched product fixtures to default tiers-enabled products
- updated product API mocks to include benefit handling
refs https://github.com/TryGhost/Team/issues/874
In the product benefits modal in Admin, hitting Enter has been updated to work as -
- when hit with focus in an empty benefit field: does nothing
- when hit with focus in any field outside benefit fields: does nothing
- add new benefit and focus on it when hit while on a non-empty benefit
refs https://github.com/TryGhost/Team/issues/792
- updates product benefit to use `name` instead of `label` attribute for benefit text
- updates model/serializer/validator to correctly handle benefit attributes
- added `+` button for adding new labels as the enter behavior is closing the popup(needs fix)
