UTF-8 encode all keys and values in nested params hash.
make new rails apps log to STDOUT
Merge pull request #9691 from hone/stdout_logging

Rails default logging to STDOUT
Fix implicit join references option reversion in test
Merge pull request #5606 from teohm/multipart_unicode_param_name

multipart POST - utf8 param name not encoded
Revert "make new rails apps log to STDOUT"

This reverts commit b7d9d6e2cd5082d269dafbc0316e2107febe1451.

Per discussion with @jeremy and @rubys on Campfire.