Update jQuery Cookie Plugin to 1.4.0
Wrap toolbar.js in AMD define() if it exists
whitespace-only

convert tabs to spaces
Change how JS libs are loaded

This change makes Django-Debug-Toolbar use the existing version of jQuery
on the page if one exists, and only loads jQuery if it isn't already loaded.
It also explicitly loads the jQuery cookie plugin and the toolbar script
as separate files. Finally, we are no longer compressing/minimizing scripts;
this is for debug purposes, and presumably will not be served in production.
Addressing review comments
load jQuery with document.createElement instead of document.write

to satisfy integration test
Merge pull request #440 from singingwolfboy/amd-js

Restructure JS to be AMD-compatible