💄 convert editor acceptance tests to async/await (#654)
💄 convert editor acceptance tests to async/await (#654)

no issue
- `async/await` cuts down on some boilerplate `andThen(() => { ... })` code and makes it more explicit which methods are async and will wait for run-loop/promise behaviour to finish before continuing
kevinansfield/Ghost-Admin,acburdine/Ghost-Admin,TryGhost/Ghost-Admin,acburdine/Ghost-Admin,kevinansfield/Ghost-Admin,TryGhost/Ghost-Admin