V2 - Ability to enter comments on a work item whilst scoring

[bryder08]

Our team has had many instances where the estimation session results in us wanting to make notes on a work item for future action/reference outside of the user story/acceptance criteria. We then typically have to open a new window, enter the text and save the information.

It would be useful to have an option to add a comment on the selected work item, whilst scoring within the estimation session.