The refactoring and improvements I did to RB.CollectionView broke the

selection of the default branch in the post-commit section of the New Review

Request UI. This wasn't super critical, except in the case where there's only a

single branch, in which case the commits would never be listed.
I've updated the function naming to match the new name in CollectionView.

Loaded a repository in the New Review Request UI and saw the list of commits on

the default branch without having to click anything.