Make `ENABLE_DOCS ember s` work as expected
[DOC release] Cleanup application API code examples

Quotes, vars, spaces
[BUGFIX beta] Assert existence of `name` property for registered initializers
Merge pull request #9513 from knownasilya/patch-2

[DOC release] Cleanup application api code examples
Merge pull request #9514 from vinilios/initializer-assertion

[BUGFIX beta] Assert name property exists when registering an application initializer
Merge pull request #9508 from cibernox/live-docs-works-with-just-s

Make `ENABLE_DOCS ember s` work as expected
Use ember-dev test helpers.

* Move configuration, into `index.html`.  This is in preparation for
  publishing the test runner page to S3 (so users can hit
  `http://builds.emberjs.com/canary/ember-test.html`).
* Use updated helpers from ember-dev.
Merge pull request #9516 from rwjblue/use-test-helpers-from-ember-dev

Use ember-dev test helpers.
Publish test index.html for easier testing from S3.
Merge pull request #9520 from rwjblue/enable-s3-tests

Publish test index.html for easier testing from S3.
Remove QUnit option for `raiseonunhandleddeprecation`.

This is now required to pass Travis runs so it should just be enabled
all the time internally.  It has been a point of confusion for some
contributors (why do the tests pass locally but not on Travis).
Merge pull request #9521 from rwjblue/remove-checkbox-for-raise-unhandled-deprecation

Remove QUnit option for `raiseonunhandleddeprecation`.