The dashboard has a column which can show a blue dot when review requests have

had new updates since the last time they were viewed by the user. This is used

by people to let them know that there's some unread content. However, the

column currently would not include the dot for review requests which have

never been opened by the user. Since those too should count as unread content,

we want to cover this scenario as well.
This change adds "New Updates" blue dot to a review request if it hasn't

been opened yet.

Unit tests passed. Also manually checked the "New Updates" dot does appear on review requests that hasn't been visited.