title: Automatically deleting branches when completing pull requests
body: <p>My company uses VSTS with git.  When I complete a pull request into the develop branch in VSTS the check box to delete the feature branch is automatically checked, but it won't delete unless I change the permissions on the feature branch to allow an administrators user group that I'm a member of to Rewrite and destroy history (force push).</p>
  
  <p>It's kind of tedious to do this every time I complete a pull request, but I'm not crazy about the idea of giving all members of this administrators user group the ability to delete feature branches all the time. It seems like there could be accidental deletions.  I do feel pretty comfortable with deleting the develop branch when I'm in the process of completing a pull request that's been reviewed and approved.  Is there a third option as far as permissions?  How does your company have the policies set as far as being able to delete feature branches?</p>