added kitchensink + joyride js call + removed jquerycookie exclude

I have:

- removed the `jquery.cookie.js` exclude from wiredep in the grunt file (requirement for joyride js component)
- added the kitchensink markup to the `app/templates/index.html`
- added some additional javascript to make the joyride in the kitchensink work in `app/templates/js/app.js`

*Not fully tested*: but tested the changes in generated project

Grtz
Sam