twbs/bootstrap — pull request #13069 by cerlestes (2014-03-14 16:15:27+00:00)
Title: Fix missing 1px below list-groups

One pixel was missing below list-groups. This was especially a problem when overflow: auto/scroll; is applied to the list, as a scrollbar will always be shown. That's because of the .list-group-items' nature of stacking via margin-bottom: -1px;