Update funfactory to latest master.

This 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