feat(kraken): include kraken.css

Minimal style with Kraken

- the thuirds and fourths grid is limiting
chore(grunt): params for grunt config
feat(kraken-12): introduce 12 columns kraken
chore(cleanup): remove old kraken files
test(TravisCI): testing the CI tool Travis
fix(TravisCI): .travis.yml
chore(TravisCI): Karma tests now pass
chore(TravisCI): update cfg from TravisCI branch
chore(TravisCI): remove concurrency
chore(TravisCI): test in Firefox and PhantomJS
chore(TravisCI): add Firefox and PhantomJS launcher
chore(TravisCI): remove node .11, add .9
chore(TravisCI): remove .9 (unstable) since not installed
chore(bower): add kraken-css-12 to dependencies
layout(ribbons): add ribbons to the CSS

Any block object can now be decorated with a CSS ribbon, after being
enclosed in DIVs like this:

      <div class="img-wrapper">
        <div class="ribbon-wrapper">
          <div class="ribbon favorite"></div>
        </div>
        <!-- IMG that needs to be 'ribbonized' -->
        <img ng-src="{{pl.img}}" alt="hotel image">
      </div>