unfucks disabled fieldset form example with form groups

BS3 commit 844df9e0011c0dff5900bcbed3f1146564c0103c
Enable scrollable responsive nav bar

BS3 commit c15f5a89a07316404b289fc0c65db1a4e52c95d1
Enable scrollable responsive nav bar. unfucks disabled fieldset form example with form groups

BS3 commits c15f5a89a07316404b289fc0c65db1a4e52c95d1,
844df9e0011c0dff5900bcbed3f1146564c0103c