Migrated from Bootstrap 2.2.1 to 3.0.3. Differences in class names can
be found @ http://getbootstrap.com/getting-started/#migration. There are
also HTML structural changes in places such as the "nav bar" for
example. See the latest Interject project -
https://github.com/ukwa/interject/blob/master/interject-webapp/app/views/main.scala.html,
which has these changes.