Enable dropdown in sticky-footer with Bootstrap JS

The sticky-footer example uses a drop down in its navbar, and dropdowns
require Bootstrap's JS to work.

Use the minified version of Bootstrap since this example is about the
CSS and not about the JS.
Use correct class for header in jumbotron dropdown nav
trivial spacing fix
fixes #8816
fixes #8814
fixes #8216
Merge pull request #8852 from briannelsondesign/label_baselines

Adjusts vertical alignment of labels and badges
Merge pull request #8726 from andreypopp/3.0.0-wip

Fix out of order variable declaration order
edit modal docs code to fix #8769
Merge pull request #24 from ssorallen/sticky-footer-js

Sticky footer example JS and navbar dropdown style
Merge pull request #11 from ssorallen/jumbotron-js-inputs

Jumbotron JS + "form-control"
Merge pull request #16 from ssorallen/starter-template-js

Add jQuery + Bootstrap JS to starter template
Merge pull request #10 from ssorallen/sigin-input-block

Replace 'input-block-level' with 'form-control'
Merge pull request #13 from hph/master

Fix relative links to examples and links to docs
Merge pull request #18 from p8952/local-jquery

use the local copy of jquery
Merge pull request #7 from sprice/update_scripts

Update scripts
Merge pull request #9 from ssorallen/carousel-img-height-js-path

Carousel image height and JS path
Merge pull request #22 from Dev-Ad/patch-1

.navbar-wrapper need higher z-index to be on top of the carousel
Removed background color from #gradient mixins to support transparent gradients
Added attribute whitespace