Enable scrollable responsive nav bar. unfucks disabled fieldset form example with form groups. move things around. .input-group-addon broken in Firefox. remove dupe border-box. remove focus outline on :focus of buttons in button groups

BS3 commits c15f5a89a07316404b289fc0c65db1a4e52c95d1,
844df9e0011c0dff5900bcbed3f1146564c0103c,
04dc22103706519dfc48c6634351a66a3218221f,
2354cd1ae8ae3e82aa17947a08633c49da3658ee,
98df9495cc92bd710a6d55c4d535da7aaf730031,
f3bd6dbf0356033e110fa13856c6ea28fa6623e9
Enable scrollable responsive nav bar. move things around. .input-group-addon broken in Firefox

BS3 commits c15f5a89a07316404b289fc0c65db1a4e52c95d1,
04dc22103706519dfc48c6634351a66a3218221f,
2354cd1ae8ae3e82aa17947a08633c49da3658ee
Enable scrollable responsive nav bar. add the navbar-masthead and navbar-toolbar classes to the appropriate scrollable responsive navbar examples

BS3 commits c15f5a89a07316404b289fc0c65db1a4e52c95d1
unfucks disabled fieldset form example with form groups

BS3 commit 844df9e0011c0dff5900bcbed3f1146564c0103c