Added test case to prevent regression of chained, preloaded scopes. (#7490)
Test abstract controller's localize method.
Removed ActionController::Base dependency from abstract controller translation tests.
Merge pull request #8913 from seejee/regression_test_for_chained_preloaded_scopes

Added test case to prevent regression of chained, preloaded scopes.
Merge pull request #9007 from dpree/master

Enhanced tests for AbstractController::Translation module