Remove Gemfile.lock before running 'bundle install' to make sure we get latest dep versions.
Update the JS.Packages script loader.
Bump Capybara 2.0 and 2.1 submodules.
Cast numbers to strings when setting form field values.
Update PhantomJS spec reports on 2.0 and 2.1.
Update tests for 2.0 and 2.1 on Chrome.
Update spec reports for Safari on 2.0 and 2.1.
Update Firefox reports for 2.0 and 2.1.