Fix ruby version declaration for rbenv
Upgrade therubyracer version to fix v8 installation problems
Make the first two scenarios pass
Make web scenarios to create mad libs pass (with and without javascript)

- Had to upgrade capybara and cucumber-rails to be able to use Poltergeist as javascript driver
Make web reports scenarios pass (with and without javascript)

- Had to add field_type and field_description to be able to group usage by field_type with Sqlite