explicitly set LANG in test run
explicitly set LANG in test run

tox removes most of the user environment, including the LANG variable, and it seems
that python wants to default to using ascii instead of utf8. Don't let it.

Thanks for the timely tweet @drmaciver

Marclass/limbo,sentinelleader/limbo,palachu/sdbot,TetraEtc/limbo,freshbooks/limbo,signalnine/alanabot,llimllib/limbo,rizaon/limbo,TetraEtc/limbo,kylemsguy/limbo,serverdensity/sdbot,michaelMinar/limbo,llimllib/limbo,ruhee/limbo