* add no-jquery rule and move event listeners to ember-concurrency tasks
* remove unnecessary onchange and handleKeyDown actions
* add element.closest polyfill and convert linked-block to use native dom apis
* update pretender, fetch, page-object, add optional-features, remove ember/jquery
* turn off jquery inclusion
* remove jQuery.isPlainObject usage
* violatedDirective isn't always formatted the same
* use fetch and the ember-fetch adapter mixin
* move to fetch and lowercase headers for pretender
* display non-ember-data errors
* use new async fn test style and lowercase headers in auth service test
* setContext is not necessary with the new style tests and ember-cli-page-object - it actually triggers jquery usage
* update ember-fetch, ember-cli-pretender
* wait for permissions check
* lowercase header name in auth test
* refactor transit tests to one test per key type
* simplify pollCluster helper
* stop flakey tests by prefering the native fetch
* avoid uncaught TransitionAborted error by navigating directly to unseal
* unset model on controller after unloading it because controllers are singletons
* update yarn.lock
