tests on chained helpers
added ember-testing for running in qunit
Correction in test description
Merge pull request #2574 from marcioj/master

Correction in test description
Merge pull request #2569 from sly7-7/ember-testing-tests

add few dummy tests on ember-testing
Make wait a promise and a helper
Merge pull request #2576 from teddyzeenny/wait

Make wait a promise and a helper
Events sent to controllers can bubble

If you return true from an event handler on a controller, it
will continue to bubble (presumably to the router).

This is part of `routeTo` work:
https://github.com/emberjs/ember.js/pull/2522

Also related, on the router.js side:
https://github.com/tildeio/router.js/pull/15
cleanup ember-test tests
remove EMBER_APP_BEING_TESTED global
Merge pull request #2578 from stefanpenner/clean_ember_testing

cleanup ember-test tests
Fix CollectionView.arrayDidChange documentation

CollectionView.arrayDidChange arguments have changed wihout
documentation changes. This commit fixes this method documentation.
Merge pull request #2579 from karlguillotte/collection-view-docs

Fix CollectionView.arrayDidChange documentation
fix rejecting a deferred with itself
cleanup deferred tests
Merge pull request #2580 from stefanpenner/master

fix rejecting a deferred with itself
Deferred self rejection does not need special handling
Merge pull request #2581 from teddyzeenny/deferred-rejection

Deferred self rejection does not need special handling
Revert "Merge pull request #2563 from ef4/render-optimization"

This reverts commit 082a9870b176113eada12ba71ed83dd9de2ed702, reversing
changes made to 68fc7fc08ef6d553b8e01c6972040be6e0655cd4.
This function is already defined as `set`
Remove unused helper function

`setAndFlush` is defined but not used.