Strengthen existing specs by testing the CollectionView's itemEvent arguments
Merge pull request #1135 from jasonLaster/collectionview-spec-update

Strengthen existing specs by testing the CollectionView's itemEvent arguments
Update controller.spec.js

Companion to pr #1122
Update marionette.controller.js
Adds @ui functionality to itemViewContainer

You can now reference @ui elements when specifying an itemViewContainer