refs https://github.com/TryGhost/Ghost/issues/7515
- add a `retry` icon that better matches button text dimensions
- add a spin animation for the retry icon
- use the new retry icon in the default `gh-task-button` template
- add a "restart animation" method to `gh-task-button` so that repeated clicks on a button appear to register the action when local validation means that there's no transition from failed->running->failed
refs https://github.com/TryGhost/Ghost/issues/7515
- adds animated spinner and check SVG icons
- improves SVG sizing/alignment in buttons
- disables old technique of fixing button size because it doesn't work now that buttons have more than a single spinner when running/saved/failed
- fixes broken spinner in `gh-spin-button` components
closes https://github.com/TryGhost/Ghost/issues/8249
- replaces the old split-button publish/schedule/update button with a less confusing menu system
- adds a `{{gh-date-time-picker}}` component that contains a datepicker with separate time input
- replaces the date text input in the post settings menu with `{{gh-date-time-picker}}`
- disabled when post is scheduled, only way to update a scheduled time is via the publish menu
- validates date is in the past when draft/published so there's no confusion with scheduling
- displays saving status in top-left of editor screen
- refactor editor (auto)saving processes to use ember-concurrency
Other minor changes:
- adds `post.publishedAtBlog{TZ,Date,Time}` properties to Post model to allow working with `publishedAt` datetime in the selected blog timezone rather than UTC
- adds a `beforeSave` hook to `validation-engine` that is called after successful validation and before the Ember Data save call is made
- adds validation of `publishedAtBlog{Date,Time}` to post validator
- prevent gh-task-button showing last task state on first render
- fixes bug where clicking into and out of the published date input in the PSM without making any changes saves a published date for draft posts
refs https://github.com/TryGhost/Ghost/issues/7865
- convert all signin related actions to ember-concurrency tasks and consolidate in the signin controller rather than spread across controller+route
- add `successClass` and `failureClass` params to `gh-task-button` that can be used to override the default success/failure button classes
- prevent clicks on `gh-task-button` from triggering form actions (this behaviour should never be necessary, task buttons should either be separate to the form as in the "forgot?" button or the form action performs the same task and can be triggered by a standard form submit)
refs https://github.com/TryGhost/Ghost/issues/7515
- changes to `gh-task-button`:
- can take `buttonText` (default: "Save"), `runningText` ("Saving"), `successText` ("Saved"), and `failureText` ("Retry") params
- positional param for `buttonText`
- default button display can be overridden by passing in a block, in that scenario the component will yield a hash containing all states to be used in this fashion:
```
{{#gh-task-button task=myTask as |task|}}
{{if task.isIdle "Save me"}}
{{if task.isRunning "Saving"}}
{{if task.isSuccess "Thank you!"}}
{{if task.isFailure "Nooooooo!"}}
{{/gh-task-button}}
```
- update existing uses of `gh-task-button` to match new component signature
refs https://github.com/TryGhost/Ghost/issues/7255
- adds a `.appear-disabled` CSS class that doesn't prevent pointer events like `.disabled`
- updates `gh-task-button`:
- use `.appear-disabled` class instead of actually disabling button
- add check to guard against the button's assigned task being run multiple times whilst the spinner is running
This resolves the [user profile slug issue](https://github.com/TryGhost/Ghost/issues/7255) where clicking the Save button whilst the slug input has focus would only trigger the input's focus-out event due to it immediately disabling the button.
* deps: ember-concurrency@0.7.8
* initial conversion of post & user actions to e-concurrency tasks
- add task button which handles auto-spinning of e-concurrency tasks
- fix tests
