[BUGFIX beta] When selecting controller for view prioritize controllerName over
controller matching template or route name
[BUGFIX beta] Preserve ability to render alternate controller matching template if
controllerName is specified.

Controller precendence for render is as follows:
* explicitly passed controller always has top precedence
* if name explicitly passed, prioritize name over controllerName
* prioritize controllerName when no explicit name
* fall back on routeName
[BUGFIX beta] Force remove `required` attribute for IE8

In IE8, `elem.prop('required', '')` couldn't remove attribute.
(This problem is occured at `required` only. Other attributes work as our
expectation.)

``` javascript
view.set('required', false);
view.$().get(0).outerHTML; // this includes `required` attribute.
```

To remove attribute, `removeProp` is needed.
example fixes for Ember namespace (plus some)
Merge pull request #5039 from knownasilya/cleanup-ember-namespace-docs

[DOC] Example fixes for Ember namespace (plus some)
[BUGFIX beta] Use notEmpty rather than bool to determine sorting

Previously, when sortProperties is set to an empty array, SortableMixin will
attempt to sort the arrangedContent. With no sortProperties, orderBy() always
returns 0 when comparing two objects. Returning 0 is unstable in some browsers
(I.E. Chrome for arrays with length > 22), meaning the arrangedContent might be
ordered unexpectedly.

Instead, use computed.notEmpty to set the isSorted property. An empty array will
no longer be sorted. When programmatically manipulating sortProperties, it is
easier to maintain sortProperties as an array, rather than setting to null when
empty.

Fix minor typo in test: rearrenge => rearrange
Setup bower canary/beta auto release
Update bin/bower_ember_build with production variables.
Merge branch 'merge-5041'
Update publish script to protect secret.
[BUGFIX] Ensure VERSION_STRING_PLACEHOLDER is replaced in json files
Merge pull request #5042 from rondale-sc/replace_version_string_in_json_files

[BUGFIX] Ensure VERSION_STRING_PLACEHOLDER is replaced in json files
Merge pull request #5016 from kevinkehl/sortable-nonempty

[BUGFIX beta] Sortable nonempty
Close #5051 -- fix validateFullName calls to be assertions
Merge pull request #5057 from kimagure/validateName-assertion

Close #5051 -- fix validateFullName calls to be assertions
Tweak deprecation assertion messages for clarity
Merge pull request #5058 from mixonic/tweak-deprecation-assertions

Tweak deprecation assertion messages for clarity
Revert #3218, add deprecation notice for global Handlebars lookups.
allow both before and after for initializers
Merge pull request #5063 from simplabs/initializers-before-and-after

Allow both before and after for initializers