Update funfactory to latest master.

Pulls in:

* 31bd1b4 Merge pull request #55 from pmclanahan/add-locale-middleware-exemption
* 7a1472a Add exemption for lang param in locale middleware.
* cbf37fd Merge pull request #54 from jgmize/FF_DB_HOST
* 3c1e4a8 Add support for FF_DB_HOST env variable for tests