Fixes, cleanup and design base

Kristian,

Here's a lot of fixes, cleanup and a base to prepare the demo. Based on Twitter Bootstrap doc, that should make it ideal for us to demo this.

We might need to talk about the examples' structure and organisation, I've followed your path so far.

P.S.: Would be good to replace few static code by actual Ember Bootstrap Helpers ;-)

If you continue early on it, please commit often, under new branches ideally, so I can follow your progress as well and we avoid colliding and duplicate updates.