Open stable/grizzly

Bump "next" version to 2013.1.1 and switch default branch in .gitreview.

Change-Id: I2cff3c7d27596b4cdff3d59d775751be7e933cb0
Adpated to nova's gettext changes.

Resolve the failure of nova_notifier unit test due to the gettext
changes in nova.

This is part of the blueprint gettext-i18n-issue.

Change-Id: I4dc1404fbd401bf2f33b64cb9a963eeaa3796ebd
Merge "Open stable/grizzly" into stable/grizzly