no issue
- added `page` model
- removed `page` param from Post model
- added pages screen with associated links
- added `:type` param to editor screens to work with the right models
- removed post<->page toggle and associated tour item
no issue
- upgrade to latest `ember-source` and related dependencies including `ember-cli`
- upgrade to latest `ember-mocha` and modern ember testing setup
- https://github.com/emberjs/rfcs/blob/master/text/0268-acceptance-testing-refactor.md
- switch from using global acceptance test helpers and `native-dom-helpers` to using the new `ember-test-helpers` methods
- use [`chai-dom`](https://github.com/nathanboktae/chai-dom) assertions where in some places (still a lot of places in the tests that could use these)
- pin `ember-in-viewport` to 3.0.x to work around incompatibilities between different versions used in `ember-light-table`, `ember-infinity`, and `ember-sticky-element`
- incompatibilities manifested as "Invalid value used as weak map key" errors thrown when using `ember-light-table` (subscribers screen)
- pin `ember-power-datepicker` to unreleased version that contains a move from global acceptance test helpers to modern test helpers
no issue
- nav menu had many unused CSS classes that were sometimes used for test selectors
- `:contains` is not a native CSS selector so will cause issues when we switch to native test helpers
refs #9865
- removed all `oauth2` and token-based ESA auth
- added new `cookie` authenticator which handles session creation
- updated the session store to extend from the `ephemeral` in-memory store and to restore by fetching the currently logged in user and using the success/failure state to indicate authentication state
- ESA automatically calls this `.restore()` method on app boot
- the `session` service caches the current-user query so there's no unnecessary requests being made for the "logged in" state
- removed the now-unnecessary token refresh and logout routines from the `application` route
- removed the now-unnecessary token refresh routines from the `ajax` service
- removed `access_token` query param from iframe file downloaders
- changed Ember Data adapters and `ghost-paths` to use the `/ghost/api/v2/admin/` namespace
no issue
- upgrade `ember-ajax` to 3.0.0
- `ember-ajax` [now passes the payload through directly](https://github.com/ember-cli/ember-ajax/releases/tag/v3.0.0) rather than trying to normalize it so all our error handling needed to be updated
closes https://github.com/TryGhost/Ghost/issues/8203
- rename `version-mismatch-test.js` to the more generic `error-handling-test.js`
- add tests to simulate receiving HTML errors (eg, the type of error received from CloudFlare for a gateway timeout)
