Comment 1 for bug 1797973

Indeed, several UI's were updated as part of bug #1511742 (https://bugs.launchpad.net/evergreen/+bug/1511742/comments/40). It looks like we missed one...

I think the .form-control expansion is what we want, since it's consistent with other Bootstrap form controls. That way the user has full control of the width, e.g. by wrapping the selector in "col-*" classes.