A recent change introduced unit tests for ReviewRequestPageData, which

backs the review request page. This change fleshes out our testing

further, adding tests for the view, which encompasses all the stages of

ReviewRequestPageData along with other page components (actions,

JavaScript setup, etc.).
Review requests bound to repositories now use hosting services, which

ensures a bit more test coverage (and unveils issues surrounding

re-querying of repositories and other objects).
This gives a more comprehensive view of where database queries need to

be optimized.

Unit tests pass.