refs https://github.com/TryGhost/Ghost/issues/7860
- remove preview pane from content screen
- add basic post status filters
- replace custom infinite scroll with ember-infinity and increase trigger threshold for improved scroll behaviour
Commits:
* basic content list + filter using existing infinite scroll and pagination
* swap our custom pagination + infinite loader for `ember-infinity`
* minor cleanups
* reset scroll position when changing filter
* fix tests
* remove client-side sorting step as we no longer have a live collection
* remove unused `mobile-index-route`
* add acceptance tests for content screen filters
no issue
- add loading substates for all routes that previously blocked transitions until their model had finished loading
- enables immediate response on navigation click
- loading templates include the title bar to provide immediate indication of which page is loading
- loading templates include a new `{{gh-loading-spinner}}` component that will only show the spinner after 200ms to avoid flashing a spinner for users on fast connections
- updated Version Mismatch tests to match new behaviour of intermediate transitions when navigating
no issue
- use the same loading indicator as used on my.ghost.org
- will display whilst the JS is loading and initializing rather than showing a completely blank screen
