no issue
- switch `jscs` and `jshint` inline config to `eslint` config
- fix eslint errors, predominantly in tests where the config now the main app config more closely
refs TryGhost/Ghost#7628 (issue), refs TryGhost/Ghost#7631 (required)
- update `config` service to fetch from public configuration endpoint
- add `beforeModel` to `application` route to fetch config and pause further processing until the request is complete
- remove `<meta name="env-*">` tags from generated `default.hbs` and internal testing `index.html`
- add mirage config to simulate configuration endpoint and helper to simulate enabled oauth config
- update `ghost-oauth2` torii provider to use auth server URL from server-provided config
issue TryGhost/Ghost#7452, requires TryGhost/Ghost#7451
- use a `ghostOAuth` config flag to switch between the old-style per-install auth and centralized OAuth auth based on config provided by the server
- add OAuth flows for:
- setup
- sign-in
- sign-up
- re-authenticate
- add custom `oauth-ghost` authenticator to support our custom data structure
- add test helpers to stub successful/failed oauth authentication
- hide change password form if using OAuth (temporary - a way to change password via oauth provider will be added later)
closes#7014
- uses the `AjaxServiceSupport` mixin from `ember-ajax` to replace Ember Data's internal `ajax` method with our own ajax service
- normalizes all error handling to use `ember-ajax` style errors
- default to the `application/vnd.api+json` content-type so that we don't have a mix of urlencoded and plain JSON content
- fix `normalizeErrorResponse` in our `ajax` service so that it doesn't add an empty `errors` array to payloads
closes https://github.com/TryGhost/Ghost/issues/7117
- adds guard to `sanitizeInput` method of `gh-trim-focus-input` for null/undefined values
- adds acceptance test for successful signup screen flow
- removes unneeded validation/update handling for a non-editable email field
- adds "At least 8 characters" placeholder to password field
- fixes enter key not submitting the form when name or password field has focus
