Make code review feature usable

TFS code review should not require a new code review to be started when code that is already under review is changed based on review comment

implement branch history for folders

Allow for gitflow branching model

Allow the ability to prove that a code review was done for a task

Allow organizing/grouping git repositories in a team project

Update work items on commit for git

Support pull requests from different repositories

Code Review after tasks in TFS completed

Make visible the current working changeset at which the code is updated in TFS Source Control History