Use local copy of jquery instead of hotlinking
Add new 'form-control' class to style header inputs
Add Bootstrap JS to make collapsible nav work

This example uses the collapsible nav for smaller screen sizes, and it
requires Bootstrap JS to get that functionality.
Fix relative links to examples and links to docs
Add jQuery + Bootstrap JS to starter template

The starter template uses the Collapse component[1], which requires
Bootstrap's JavaScript.

Fixes #15

[1] http://twitter.github.io/bootstrap/javascript/#collapse
.navbar-wrapper need higher z-index to be on top of the carousel
Use correct dropdown header class in sticky-footer

"nav-header" does not exist in Bootstrap. The class used for headers
in dropdowns is "dropdown-header".
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