The Review composer is the redesign of the review dialog to improve user

experience. The Review composer: sidebar serves as the sidebar for the

review composer.
The sidebar contains a button to create new general comments to replace the

add general comments button in the review dialog. A rendered list of comments

which will serve as a table of contents of reviews left in the review and a

tips and documentation section.

Added new JS unit tests to test functionality added. All JS tests pass.