JS: update to latest BS3 build
Added ".col-sm-*" to the grid example per the description above the example.

BS3 commit cfacd228ebd7f52faa2dd85a20c3d2534094ee5b
bold links not semibold in alerts

BS3 commit d46e645a0f19b24280bf700f4d4fb56caadb4409
Added classes for lg-pull, lg-push, lg-offset, sm-pull, sm-push, sm-offset

BS3 commit 1583dd55e9f05275ee054884720dce2be8e2f07a
fixes 8955

BS3 commit 69f99201327662ec1bd0e15516a064e6dcc9236c
Tighten up buttons and form controls

BS3 commit 173dac4e54281312ebb7ff993df20caffbc56840
bold links not semibold in alerts. Added classes for lg-pull, lg-push, lg-offset, sm-pull, sm-push, sm-offset. Tighten up buttons and form controls

BS3 commits d46e645a0f19b24280bf700f4d4fb56caadb4409,
1583dd55e9f05275ee054884720dce2be8e2f07a,
173dac4e54281312ebb7ff993df20caffbc56840
tighten up buttons and form controls even more
Remove requirement of `.list-group-flush` when list groups are in panels

BS3 commit 6b850132d056a136dc4734c4d68c9e1c23b7843e