[BUGFIX beta] Does not disregard currentWhen when given explicitly.
FIxes #4688
[DOC beta] Fix sample code for `Ember.Handlebars.registerBoundHelper`

This has been noted by the sharp eyes of @ZenCocoon in http://git.io/rIuURA.
Merge pull request #4710 from pangratz/doc_registerBoundHelper

[DOC beta] Fix sample code for `Ember.Handlebars.registerBoundHelper`
Update to Ember.View's attributeBindings Documentation

You can map one property on to another within the `attributeBindings` array, but this wasn't represented in the documentation. I talked about this with @rwjblue in #emberjs yesterday, and he recommended I update the docs. :smile:
Merge pull request #4716 from mtthgn/patch-1

Update to Ember.View's attributeBindings Documentation
Merge pull request #4700 from hyderali/fix-resource-currentwhen

[BUGFIX beta] Does not disregard currentWhen when given explicitly.
[FEATURE] Support target attribute for `link-to` helper