[Bugfix beta] [fixes #3444] Prevent an itemController leak

itemControllers/subControllers should be tied to bound to the life cycle of the parent controller.
Update route.js

Update documentation to use getters, [0] is undefined for ember data
Use imported run, not Ember.run.
Remove global Ember.run reference from itemControllers.
Merge pull request #4879 from rjackson/remove-global-run-from-itemcontroller-tests

Remove global Ember.run reference from itemControllers.
Merge pull request #4555 from mixonic/better-ajax-count

[BUGFIX beta] Only consider requests fired in a single test as pending
Merge pull request #4808 from boazsender/fix-select-typo

Fixing documentation typo
[BUGFIX beta] Spaces in brace expansion throws an error.
[DOC beta] Use non-default example for attributeBindings in TextArea.

Related to pull request #4729
Textarea extension example is using `required` as an example while `required` is now one of the recognised attributes already.
Merge pull request #4888 from rjackson/error-whitespace-in-brace-expansion

[BUGFIX beta] Spaces in brace expansion throws an error.
[BUGFIX beta] Spaces in brace expansion throws an error.
[DOC beta] Use non-default example for attributeBindings in TextArea.

Related to pull request #4729
Textarea extension example is using `required` as an example while `required` is now one of the recognised attributes already.
[DOC Beta] Fixing documentation typo (thanks to @bmac)
Use `QUnit.module` instead of `module`.
Merge pull request #3838 from rjackson/fix_reserved_word_in_module

Use `QUnit.module` instead of `module`.
[FEATURE ember-routing-consistent-resources]

Adds `.index`, `.loading`, and `.error` sub-routes for resources created
even if no callback was provided.

For example:

```javascript
  App.Router.map(function() {
    this.resource("home");
  });
```

Prior to this feature `home.index` route would not be created for the above resource.
Merge pull request #4251 from rjackson/ember-routing-consistent-resources

[FEATURE ember-routing-consistent-resources]
Merge pull request #4834 from ibroadfo/master

update run.throttle docs with new immediate default
[BUGFIX beta] update run.throttle docs with new immediate default
Cleanup deprecations from Controller content -> model change.