twitter/bootstrap — pull request #8354 by bbaia (2013-07-01 16:24:08+00:00)
Title: Fix prepended and appended inputs margin-bottom in navbar forms

navbar's height change when using prepended and appended inputs in navbar forms.
Plunker showing the bug: http://plnkr.co/F5odYeM7v5d10nhkDpU3