Readded percent stacking, fixed bug when area = 0, added view options to histogram outside of editor

moved the aws config out of the general gruntfile setup, and into a task that is only run when needed.

Fixes for #466

Conflicts:
	panels/histogram/module.js

 - Created a grunt task to build, compress, and upload the build to s3
 - Updated the README to point users to downloads.elasticsearch.org

Fixed dashboard scripts

Fixed the loading of the dashboard scripts, feeding them the needed args and fixing the path that they are fetch from.

Spencers cache busting tweaks, fix for map panel path

Conflicts:
	dist/app/components/require.config.js
	src/app/components/require.config.js

Fix for jQuery extensions

Previous fix did not work when jQuery was inlined into app.js because RequireJS was under the impression that it had already init-ed jQuery and didn't call the init function. This new strategy just allows jQuery to be jQuery and has app.js include the extensions (components/extend-jquery.js) before the app boots.

Fixes the way that jQuery is loaded with RequireJS, closes #496

Somehow missed that tooltips were broken, caused by jquery defining itself using the 'jquery' name, which prevented our custom module from being included and extending jquery.

Added a cache busting config option to RequireJS that will add the latest commit sha to urls (only in dist build).

Build tweaks