Upgrade to Capybara 2.x

[mamhoff]

This will involve some refactoring of tests... More info here http://www.andylindeman.com/2012/11/11/rspec-rails-and-capybara-2.0-what-you-need-to-know.html

[phansch]

I've set the Gemfile to use Capybara 1.1.4 for now, so the tests won't break in case you need to run bundle update.