Add Zurb Foundation

  - Set up Zurb Foundation, see http://foundation.zurb.com/docs/applications.html
  - Remove Turbolinks
Add a navigation

  - Add navigation
  - Fix minor regressions by relaxing some conditions in my integration tests
Show bookmarks on the home page

  - Move the add a bookmark for to a separate page
  - Updated styles
Get the add one link working
Fix typo: Change 'to' to 'and'
Update the sites index page
Update the bookmark style
Forgot to wrap the 0-state content within the grid
Refactor the bookmark show page
Wrap the flash with the grid structure and style it