* The `javascript:update` rake task failed because recent versions of chart.js use a lowercase filename (`chart.min.js` instead of `Chart.min.js`)
* Changed `loadScript()` to use lowercase keys to lookup scripts
* `svg-arrow.css` seems to have changed slightly (linebreak at the end of file)
* Some are no longer flaky or easily fixed
* Some are out of date or test things we can't do accurately (scroll
position) and are removed.
* Unwinds some uppy tests and makes sure all promises and runloops are
resolved.
Everything has been run in legacy/ember cli multiple times to ensure no
obvious suite regressions.
Using arrow functions changes `this` context, which is undesired in tests, e.g. it makes it impossible to setup things like pretender (`this.server`) in `beforeEach` hooks.
Ember guides always use classic functions in examples (e.g. https://guides.emberjs.com/release/testing/test-types/), and that's what it uses in its own test suite, as do various addons and ember apps.
It was also already used in Discourse where `this` was required. Moving forward, it will be needed in more places as we migrate toward ember-cli.
(I might later add a custom rule to eslint-discourse-ember to enforce this)
We used many global functions to handle tests when they should be
imported like other libraries in our application. This also gets us
closer to the way Ember CLI prefers our tests to be laid out.
This is where they should be as far as ember is concerned. Note this is
a huge commit and we should be really careful everything continues to
work properly.
