use frameListEditor correctly

There were two callsites using `frameList` instead of
  `frameListEditor`. This seems to be a bug. `frameList` is a
  function not an observable and it doesn't make sense to
  set the content of an observable
meant to use an observable for editor

`observ-hash` does not convert non observables to observables.
  Therefore the call to `editor.set()` would fail