no issue
- ran [es5-getter-ember-codemod](https://github.com/rondale-sc/es5-getter-ember-codemod)
- [es5 getters RFC](https://github.com/emberjs/rfcs/blob/master/text/0281-es5-getters.md)
- updates the majority of `object.get('property')` with `object.property` with exceptions:
- `.get('nested.property')` - it's not possible to determine if this is relying on "safe" path chaining for when `nested` doesn't exist
- `.get('config.x')` and `.get('settings.x')` - both our `config` and `settings` services are proxy objects which do not support es5 getters
- this PR is not exhaustive, there are still a number of places where `.get('service.foo')` and similar could be replaced but it gets us a long way there in a quick and automated fashion
closes https://github.com/tryghost/ghost/issues/10088
* added `updateDocumentTitle` action to base route and replace usage of `.send('collectTitleTokens, [])`
* added `.titleToken()` method to editor route to add post title to document title
* called `.send('updateDocumentTitle')` after saving post title in editor controller to keep document title in sync
* updated editor controller test for latest ember-mocha and ember-test-helpers
refs https://github.com/TryGhost/Ghost/issues/9724
- when Koenig is active, toggle `ui.isFullscreen` when entering/leaving the editor route
- add `ui.isFullscreen` to the `showNavMenu` CP in the application controller
- when in fullscreen mode, display a "< Stories" link in the editor header
- refine editor header style
refs https://github.com/TryGhost/Ghost/issues/9724
- add `ember-useragent` package so that we can check the user agent screen for known-incompatible browsers/devices
- show alerts for Edge, mobile browsers, and IE11 when accessing the editor with Koenig enabled
closesTryGhost/Ghost#8287closesTryGhost/Ghost#8750
- moved all editor model functionality into the new `editor` route+controller
- moved editor template from `editor/edit.hbs` to `editor.hbs`
- refactored `editor` controller and the `editor.new`/`editor.edit` routes to work with a persistent editor rather than a teardown/re-render when transitioning from new->edit
- fixed issue in `{{gh-markdown-editor}}` for `autofocus` behaviour when the component isn't re-rendered
- fixed issue in `{{gh-simplemde}}` that was causing multiple updates to the `value` property when a new value is passed in to the component
- added `{{gh-scheduled-post-countdown}}` component to lower the noise in the editor controller
- removed editor route/controller mixins
- removed the `editor.edit` and `editor.new` controllers
