no issue
- updates `package.json` details to better reflect the separation from the `Ghost` package
- update ember config and all import statements to reflect the new `ghost-admin` module name in `package.json`
supersedes #6773
- update `feature` service and `gh-feature-flag` component to work synchronously rather than async
- use the application route's `afterModel` hook so that settings are loaded before first load
- override `session` service's `authenticate` method to load the settings after successful authentication before any other routes are processed
refs #6207, #6207
- updates tests for new async behaviour
- fixes tests failing on validation errors
- fixes `feature.labs` not updating after successful save