Upgrade to Rails 3.2.19.

(cherry picked from commit 9c29b354eb2133c5b89d8b424fee651eba7f3faa)

Conflicts:
	Gemfile.lock
Upgrade jquery-ui-rails to 5.0.0 (upgrades jQuery UI to 1.11.0).
Upgrade capybara to 2.4 series.
Upgrade faker to 1.4 series.
Update parallel_tests.